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Most people go through life
trying to not get hit.
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What's up man?
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All good.
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Did you see that fight?
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Oh did I?
I think I could've won.
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The trick is to roll with
the punches and hope that you
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don't get floored by one.
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Again.
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Our world was
born out of violence...
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and a storm that has raged
since the beginning of time.
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A storm with the power
to destroy planets.
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One mighty collision
can change everything.
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It's done it before and
it could do it again.
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Most of us live in blissful
ignorance of the chaos around us.
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But, eight astronauts with
over 1,000 days in space
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between them can tell us how
being "up there" helped them
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to truly understand
what goes on down here.
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Everyday the earth
ploughs through about 40 tons
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of material in space.
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There is so much activity,
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so much action and our planet
is right in the middle of it.
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Space isn't vast
and empty space but a
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dynamic, cosmic storm.
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It's a storm that could kill us,
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but without it...
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we wouldn't be here at all.
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This is a story
about the weird connections,
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the near misses, the
lucky breaks that created
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this amazing world.
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For 4.5 billion years our
planet has been battered and
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bruised and punched and pummeled
but we're still standing.
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It's actually the battle
that's built us and this is
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the tale of the tape.
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Thanks guys,
awesome. Alright.
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Nicole Stott is an engineer,
pilot and oh yeah...
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These are cool uh?
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She lived for
three months in space.
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You can even stick
your hand in it.
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Left hand.
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Okay I'm coming out.
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Nicole, your right waist tether
to the forward UIAD ring.
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Frankly she's a bad ass.
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Now imagine them all
pressurized and you're having
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to work against it really hard.
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Here I was, it was
so unbelievable.
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I'd spent almost 20 years
helping build spaceships and
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now here I was myself on one...
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just amazing.
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Okay I am clear Nicole.
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Remember watching
me do a spacewalk?
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Yeah.
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- Yeah. Was that fun?
- Scary. -Yeah, why was it scary?
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Cause I thought you
were gonna fall off.
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When you're in space,
250 miles above our planet and
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looking at these things
you thought you knew,
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you see them in a
totally new way.
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00:04:00,320 --> 00:04:05,820
For example, the first time
I saw a shooting star from the
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00:04:05,920 --> 00:04:11,260
space station was this very
visual reminder that there's
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a lot of other things
travelling through the
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same space, in space.
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What did I see and
the first time I saw it,
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it kind of startled me was,
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a shooting star
coming in below us.
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That's a micro meteorite
coming into the earth and
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burning up in the atmosphere
and you see this sort of
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firework display thing going on.
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I was doing earth
observation and I'm taking a
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photo and all of a sudden
I see a hole just magically
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appear about that big in
the solar panel, you know,
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that was probably hit
by a grain of sand,
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something that size, coming at 17,500
miles an hour in a different orbit.
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You get hit by
rocks all the time,
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you can hear them
ricocheting off the hull.
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You can see the scars of them in
the windows of the spaceship.
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It's a little mind boggling,
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when you think about how
much is really out there.
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Mostly the stuff
up there is pretty small,
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burns up in the atmosphere,
nothing to get worked up about,
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but there are some
pretty big rocks up there too,
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ask the dinosaurs.
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We believe the asteroid that
caused the extinction of the
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dinosaurs started way
out in the solar system.
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You know,
travelling that distance,
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it's incredible that it
found this target of earth.
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♪ ♪
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Bad for the dinosaurs but
ultimately good for us.
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We all think we know this story,
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00:06:10,750 --> 00:06:14,320
but there's something special about
the place where it happened,
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in the jungles of Mexico.
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Here in Mexico
I have the chance to dive in
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what is the most magical place to
free dive in the entire world.
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♪ ♪
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This incredible place was
created with very strong
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violence when the asteroid hit.
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00:07:04,130 --> 00:07:09,870
And the result of this is
this calm place, this paradox.
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This place which is now very
quiet was, at some point,
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where something
dramatic happened.
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♪ ♪
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Life almost disappeared.
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But at the same time, this is
where our story started and
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this is why we are here now.
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♪ ♪
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♪ ♪
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00:09:01,690 --> 00:09:07,460
♪ ♪
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00:09:16,430 --> 00:09:22,440
♪ ♪
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♪ ♪
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When this area was scanned,
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00:09:42,160 --> 00:09:45,190
we saw that hundreds of
these flooded Mexican caverns
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00:09:45,300 --> 00:09:47,860
connected together into
a vast semi-circle.
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The edges of a huge crater,
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110 miles across
and 12 miles deep.
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An asteroid that big hitting
the planet anywhere is going
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00:10:04,450 --> 00:10:08,120
to be devastating, but
scientists think it was
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00:10:08,220 --> 00:10:11,390
especially devastating
because of where it hit.
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A bulls eye strike on a
large Sulphur reserve.
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The Sulphur rock vaporized
sending billions of tons of
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polluting gas into
the atmosphere...
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00:10:29,340 --> 00:10:32,510
blocking out the sun.
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00:10:32,610 --> 00:10:36,310
The earth froze and
the dinosaurs died.
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So this big old
asteroid has been journeying
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for billions of years through
space before it gets to us and
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the earth spins right.
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So if the rock had arrived
just a few seconds later,
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00:10:51,760 --> 00:10:55,700
it would have crashed out in
the deep ocean, no bulls eye,
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00:10:56,570 --> 00:10:59,530
no fire storm,
no dino extinction.
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Earth's history is full
of moments like this.
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It's a tale of destructive
good fortune that connects the
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00:11:11,880 --> 00:11:15,750
death of a planet, ten
million African bats,
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00:11:18,190 --> 00:11:22,690
a clock in the sky and tiny
rocks from the birth of our
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00:11:22,790 --> 00:11:27,400
solar system, some about
the size of my fist.
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00:11:36,310 --> 00:11:39,270
There's a lot of rocks
hitting us from space.
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00:11:39,380 --> 00:11:42,480
If they make it through our
atmosphere and hit the surface
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00:11:42,580 --> 00:11:45,980
of our planet, people go in
search of these in very remote
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00:11:46,080 --> 00:11:49,020
places to try to find them.
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00:11:49,120 --> 00:11:51,890
They're extremely valuable
because they contain really
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00:11:51,990 --> 00:11:54,260
the story of where
our earth came from.
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Boom!
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00:12:57,020 --> 00:13:00,290
In Morocco we have a
couple of buzzes every year of
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00:13:00,390 --> 00:13:02,820
something that's way cool,
a super awesome meteorite.
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00:13:07,360 --> 00:13:10,030
If a meteorite is found in the
desert and word gets out...
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Especially if it's
of extreme value.
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00:13:20,810 --> 00:13:23,550
Then there is like a gold rush.
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00:13:32,960 --> 00:13:39,160
♪ ♪
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We're talking about the
building blocks of our planet.
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00:13:56,450 --> 00:13:59,750
♪ ♪
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00:13:59,850 --> 00:14:04,090
Some of the most valuable meteorites
are carbonaceous chondrite meteorites.
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00:14:05,390 --> 00:14:07,690
They're the oldest
form of solid material in
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the solar system.
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00:14:11,460 --> 00:14:14,600
All the universities want
it, all the museums want it.
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00:14:16,930 --> 00:14:19,870
The Bedouins are getting amazingly
good at recognizing these things.
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To the untrained eye,
these might just look like a
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normal rock, but the really
old ones contain all the raw
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materials to build
a planet like earth.
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4.6 billion years ago
where earth is today,
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00:15:06,480 --> 00:15:09,750
there was just a giant
cloud of gas and dust,
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all swirling around
the new born sun.
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♪ ♪
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00:15:29,840 --> 00:15:32,810
This was where the
cosmic storm started.
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First off with tiny
particles attracted by
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an electrostatic force.
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It's a slow process but
eventually clumps grew into
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solid matter.
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Still only as big
as a grain of sand,
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but now with just enough
gravity of their own to pull
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other grains in.
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00:16:04,210 --> 00:16:07,610
These grains fused into
rocks and as they smashed and
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00:16:07,710 --> 00:16:11,210
clumped the collisions
grew in intensity.
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Under immense heat and pressure,
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the rocks began to
build our planet.
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There seems to be
nothing subtle about the way
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earth was built.
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It would almost be like
building a space station with
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00:16:44,180 --> 00:16:45,950
a sledgehammer.
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All those
bits smashing together,
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they were everything we needed
to build a living planet.
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The calcium in our bones, the
gold in our wedding rings,
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even the iron in our ships was
all here from the beginning,
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except one thing was
in short supply, water,
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but it was on its way
and coming in fast.
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♪ ♪
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A lot of astronauts
will tell you that from
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six years old watching the moon
landing that they knew from
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00:17:28,810 --> 00:17:31,640
that moment on that
astronaut was a job that they
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00:17:31,740 --> 00:17:34,310
wanted to do.
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00:17:35,010 --> 00:17:37,810
For me, it wasn't that way.
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My background is
aeronautical engineering.
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I wanted to do something with
flying that allowed me to
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00:17:43,660 --> 00:17:47,920
learn about how things fly and
then ultimately if you wanna
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00:17:48,630 --> 00:17:51,060
know how things fly, I can't
imagine not wanting to know
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00:17:51,160 --> 00:17:53,700
how rocket ships fly.
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00:17:55,200 --> 00:17:57,670
And then one day I got
this phone call to say that
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00:17:58,300 --> 00:18:01,040
I was assigned to fly a long
duration flight on the
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00:18:01,140 --> 00:18:03,110
International Space Station.
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00:18:04,980 --> 00:18:07,280
Nicole didn't
set out to fly on the ISS,
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00:18:07,380 --> 00:18:10,050
her job was to build the thing,
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00:18:10,150 --> 00:18:13,350
but once she got up there, she
still had an eye for design.
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00:18:16,150 --> 00:18:17,850
So as an
engineer you can imagine,
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00:18:17,960 --> 00:18:20,790
I couldn't help but look
at the earth and wonder,
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00:18:20,890 --> 00:18:23,090
how does that work?
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00:18:33,410 --> 00:18:37,740
What's blindingly obvious
when you look at earth,
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00:18:38,040 --> 00:18:41,580
is water is the key.
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00:18:51,090 --> 00:18:57,190
♪ ♪
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00:19:05,070 --> 00:19:09,570
But earlier it didn't look
like this blue planet that I
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00:19:09,670 --> 00:19:13,580
saw, it was a dry
and baron rock.
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00:19:16,250 --> 00:19:18,250
For life to thrive
like it has done,
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00:19:18,350 --> 00:19:22,790
the earth needed
delivery of water.
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00:19:23,090 --> 00:19:25,620
We believe soon after
the earth was formed,
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00:19:25,720 --> 00:19:28,760
our water came from space
in a hail of violence.
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00:19:38,570 --> 00:19:43,110
♪ ♪
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00:19:49,610 --> 00:19:51,450
It must have been brutal.
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00:19:51,550 --> 00:19:54,120
We think it lasted for
about 100 million years.
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00:20:03,660 --> 00:20:09,300
♪ ♪
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00:20:18,180 --> 00:20:22,580
Icy comets and asteroids collided
with the planet in that.
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00:20:26,590 --> 00:20:29,490
To supply us with
that top off of water.
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00:20:39,100 --> 00:20:44,830
♪ ♪
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00:20:50,640 --> 00:20:54,180
But unlike Mars and Venus,
who were surely bombarded by
218
00:20:54,280 --> 00:20:56,980
the same storm,
we kept our water.
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00:20:59,780 --> 00:21:03,790
As luck would have it, the sea
that would one day grow into
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00:21:03,890 --> 00:21:07,860
earth as we know it, found its
place at the perfect distance
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00:21:07,960 --> 00:21:11,330
from the sun, what we now
call the Goldilocks zone.
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00:21:12,830 --> 00:21:14,400
Not too hot, not too cold.
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00:21:20,310 --> 00:21:22,840
The solar system is vast.
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00:21:24,640 --> 00:21:27,280
Earth could have easily wound
up somewhere where every drop
225
00:21:27,380 --> 00:21:30,180
of water either froze
up or boiled away.
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00:21:32,350 --> 00:21:36,050
But here it's solid, gas
and liquid all the time.
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00:21:37,490 --> 00:21:41,420
It only takes a tiny change
like a sunrise for things to
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00:21:41,530 --> 00:21:43,760
get a little bit slippery.
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00:21:54,340 --> 00:21:59,880
♪ ♪
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00:22:09,690 --> 00:22:15,290
♪ ♪
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00:22:25,300 --> 00:22:31,610
♪ ♪
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00:22:41,050 --> 00:22:47,290
♪ ♪
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00:22:55,970 --> 00:22:59,800
♪ ♪
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00:23:49,850 --> 00:23:53,360
Solid, liquid, gas.
235
00:23:55,630 --> 00:23:58,290
Earth's water,
it's a shape shifter,
236
00:23:58,900 --> 00:24:03,030
constantly changing forms and
as it moves from snow to sea,
237
00:24:04,070 --> 00:24:07,900
from stream to steam it
helps make the weather that
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00:24:08,010 --> 00:24:10,870
keeps this planet a
paradise for life.
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00:24:15,850 --> 00:24:18,250
From space you can
see clouds at the tops of the
240
00:24:18,350 --> 00:24:22,890
Amazon Basin but you can also
see them evaporating on the
241
00:24:22,990 --> 00:24:26,260
oceans and so these systems
are all interconnected.
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00:24:28,190 --> 00:24:32,530
That natural,
seemingly inevitable process
243
00:24:33,200 --> 00:24:35,830
of turning the oceans into rain,
244
00:24:35,930 --> 00:24:38,730
it's the very essence
of life itself on earth.
245
00:24:40,370 --> 00:24:44,470
Without it they'd be
no rivers, no ground water,
246
00:24:44,580 --> 00:24:46,810
no plants, no animals.
247
00:24:46,910 --> 00:24:49,610
The continents would be dead.
248
00:24:51,120 --> 00:24:55,420
It actually surprised
me how dynamic the planet is,
249
00:24:55,520 --> 00:24:59,460
clouds whirling, lightning storms
propagating over the surface,
250
00:24:59,920 --> 00:25:03,630
the ocean currents
visible and you realize this
251
00:25:03,730 --> 00:25:06,930
thing is not a dead rock down
there, this thing is alive.
252
00:25:11,570 --> 00:25:15,170
So we can thank our
lucky stars I suppose that the
253
00:25:15,270 --> 00:25:19,480
seed that started earth was in
the right place for water to
254
00:25:19,580 --> 00:25:21,880
exist in its three states.
255
00:25:25,920 --> 00:25:29,120
Our planet was
born out of cosmic dust then
256
00:25:29,220 --> 00:25:31,990
watered by a storm from above,
257
00:25:32,790 --> 00:25:36,990
but all those blows were nothing
compared to one that literally
258
00:25:37,100 --> 00:25:39,000
ripped the earth apart.
259
00:25:43,970 --> 00:25:48,140
You see earth had a twin.
260
00:25:48,740 --> 00:25:51,310
A twin that threatened
our existence.
261
00:26:01,670 --> 00:26:05,240
The earth is the result of many,
262
00:26:05,340 --> 00:26:10,240
many collisions but the most
violent collision of all was
263
00:26:10,350 --> 00:26:13,350
unknown to humankind,
unknown that is,
264
00:26:14,820 --> 00:26:17,020
until we went to the moon.
265
00:26:28,060 --> 00:26:30,560
I have really
vivid memories of our
266
00:26:30,670 --> 00:26:32,430
first moon landing.
267
00:26:33,940 --> 00:26:36,170
Sitting in front of
the black and white TV,
268
00:26:36,270 --> 00:26:39,540
for some reason I remember having a
grilled cheese sandwich, who knows?
269
00:26:42,540 --> 00:26:45,750
We thought, how could there
possibly be anything in common
270
00:26:45,850 --> 00:26:49,320
between the earth and all its
beautiful earthly colors and
271
00:26:49,420 --> 00:26:51,080
the grey of the moon.
272
00:26:51,190 --> 00:26:53,320
Oh that looks beautiful
from here Neil.
273
00:26:53,420 --> 00:26:55,150
This cratered surface.
274
00:26:55,260 --> 00:26:58,520
It's different but it's
very pretty out here.
275
00:26:59,390 --> 00:27:02,830
What we found surprised us,
moon rock and earth rock had
276
00:27:02,930 --> 00:27:04,600
striking similarities.
277
00:27:04,700 --> 00:27:06,000
We'd like you to press on.
278
00:27:06,100 --> 00:27:07,670
Yeah right.
279
00:27:07,770 --> 00:27:10,440
Suggesting that both the
earth and the moon had somehow
280
00:27:10,540 --> 00:27:12,100
originated from the same place.
281
00:27:12,210 --> 00:27:14,470
It's one small step for man...
282
00:27:14,740 --> 00:27:16,680
Well there's only
a handful of ways that could
283
00:27:16,780 --> 00:27:19,580
have happened and none
of 'em are pretty.
284
00:27:28,460 --> 00:27:30,690
The prominent theory
is that there was something
285
00:27:30,790 --> 00:27:33,260
else in the Goldilocks zone.
286
00:27:34,160 --> 00:27:36,860
Another planet called
Theia and it was on an
287
00:27:36,970 --> 00:27:39,470
intersecting orbit with earth.
288
00:27:43,470 --> 00:27:47,570
In space when two things are
in an intersecting orbit,
289
00:27:47,680 --> 00:27:51,280
with enough time,
it's inevitable that those
290
00:27:51,380 --> 00:27:53,450
two things will collide.
291
00:28:04,860 --> 00:28:08,260
Both planets became
molten on impact.
292
00:28:08,360 --> 00:28:12,200
We have debris thrown
out into space.
293
00:28:14,640 --> 00:28:17,500
When this cloud of
debris eventually cools,
294
00:28:17,610 --> 00:28:22,140
it condenses into a
new cosmic partnership.
295
00:28:23,210 --> 00:28:27,680
Planet earth and a
uniquely large moon.
296
00:28:39,230 --> 00:28:43,030
Our moon was
ripped right out of us,
297
00:28:43,130 --> 00:28:44,460
because of that,
298
00:28:44,570 --> 00:28:48,100
it's big and close
and has a lot of pull,
299
00:28:48,640 --> 00:28:52,910
pulls the sea in, pulls the
sea out, tides, simple right?
300
00:28:55,840 --> 00:28:58,950
But things get harder
when that same sea is
301
00:28:59,050 --> 00:29:01,880
covered by ice.
302
00:29:13,490 --> 00:29:19,100
Which is something that
grandads know and modern kids
303
00:29:19,930 --> 00:29:22,440
could stand to learn.
304
00:29:32,280 --> 00:29:38,180
♪ ♪
305
00:31:16,120 --> 00:31:18,920
Lukasi knows
when the moon is full,
306
00:31:19,020 --> 00:31:23,120
the tide is strongest and
he'll have a few more minutes
307
00:31:23,220 --> 00:31:26,360
under the ice, the best
chance to grab their catch.
308
00:32:24,050 --> 00:32:25,950
We shouldn't
underestimate how influential
309
00:32:26,050 --> 00:32:27,620
the moon is in all of our lives.
310
00:32:27,720 --> 00:32:30,420
Those regular tides also
help give us another kind of
311
00:32:30,530 --> 00:32:33,560
rhythm, one you might assume
had been with us all along.
312
00:32:41,070 --> 00:32:44,370
The collision that ended up
forming the moon sent the
313
00:32:44,470 --> 00:32:47,310
earth just spinning.
314
00:32:48,380 --> 00:32:51,910
A day back then was
just five hours long.
315
00:32:56,580 --> 00:32:58,980
It was the drag of the tides
that eventually slowed the
316
00:32:59,090 --> 00:33:02,350
earth down to where a
day became 24 hours,
317
00:33:02,460 --> 00:33:06,960
like we know now.
318
00:33:16,640 --> 00:33:22,580
♪ ♪
319
00:33:24,850 --> 00:33:28,510
The 24-hour day; waking
up, having breakfast,
320
00:33:29,520 --> 00:33:32,380
working eight hours.
321
00:33:32,490 --> 00:33:36,020
Making dinner, day in, day out.
322
00:33:37,260 --> 00:33:40,030
These cycles, they're
embedded in our DNA.
323
00:33:44,170 --> 00:33:46,570
The violent
whack that gave us our moon,
324
00:33:46,670 --> 00:33:49,870
our tides and our 24-hour day,
325
00:33:49,970 --> 00:33:52,270
it gave us one more thing too;
326
00:33:52,370 --> 00:33:54,310
summer in Philadelphia.
327
00:34:00,910 --> 00:34:03,350
♪ ♪
328
00:34:03,450 --> 00:34:04,920
When I think
of the space station,
329
00:34:05,020 --> 00:34:08,090
I think of this, like,
beautiful masterpiece in space,
330
00:34:08,190 --> 00:34:10,790
just hanging there.
331
00:34:12,120 --> 00:34:14,490
The ultimate engineering
challenge was,
332
00:34:14,590 --> 00:34:17,900
how do ya make your spaceship
as much like earth as possible?
333
00:34:22,440 --> 00:34:25,300
Crossing the hatch from the
space shuttle into the space
334
00:34:25,400 --> 00:34:27,340
station the first time.
335
00:34:27,440 --> 00:34:29,670
I remember thinking,
wow, it's not the neatest
336
00:34:29,780 --> 00:34:32,340
place I've ever seen.
337
00:34:32,450 --> 00:34:36,610
There was wires and cables and
computers and equipment all
338
00:34:36,720 --> 00:34:38,950
strung along these walls.
339
00:34:41,790 --> 00:34:45,320
The way we live there is,
we've essentially mimicked
340
00:34:45,420 --> 00:34:48,730
what we have naturally
occurring on our planet.
341
00:34:50,100 --> 00:34:53,260
We have to generate
the oxygen to breathe.
342
00:34:53,930 --> 00:34:56,470
We have to generate the
electricity to power all of
343
00:34:56,570 --> 00:34:57,670
our systems.
344
00:34:57,770 --> 00:34:59,840
We have to figure out
a way to clean the air,
345
00:34:59,940 --> 00:35:02,810
so we can continue to breathe.
346
00:35:04,180 --> 00:35:07,340
Because we're human beings
and can only live comfortably
347
00:35:07,450 --> 00:35:09,950
really within a certain
temperature range,
348
00:35:10,050 --> 00:35:12,820
the whole space station, all
of the systems are working
349
00:35:12,920 --> 00:35:16,250
really hard to maintain
that environment for us.
350
00:35:19,460 --> 00:35:21,990
And then you look down at
earth and you realize that's
351
00:35:22,090 --> 00:35:25,930
exactly what nature is doing,
just on a mind-blowing scale.
352
00:35:35,110 --> 00:35:38,840
And we've got that cosmic
collision that made our moon
353
00:35:39,380 --> 00:35:42,010
to thank for it.
354
00:35:42,110 --> 00:35:43,810
Wow.
355
00:35:44,120 --> 00:35:47,080
That collision between
earth and Theia was so violent
356
00:35:47,190 --> 00:35:50,320
that it actually knocked
earth off its axis.
357
00:35:52,060 --> 00:35:54,060
There you go.
358
00:35:56,560 --> 00:36:00,200
So let's just pretend,
this is our sun and this is
359
00:36:00,500 --> 00:36:04,030
our earth and our earth is
titled, due to that collision,
360
00:36:05,140 --> 00:36:08,540
titled 23 and a half degrees.
361
00:36:13,010 --> 00:36:15,880
For six months of the year
the northern hemisphere is
362
00:36:15,980 --> 00:36:19,080
favoring the sun and for
six months of the year,
363
00:36:19,190 --> 00:36:23,420
the southern hemisphere
is favoring the sun.
364
00:36:25,420 --> 00:36:28,730
The shift in the sun's energy
from north to south throughout
365
00:36:28,830 --> 00:36:32,430
the year is constantly trying
to move the hot areas to the
366
00:36:32,530 --> 00:36:37,000
cold areas and the cold
areas to the hot areas.
367
00:36:42,540 --> 00:36:45,880
This tilt of the earth
results in our seasons.
368
00:36:51,780 --> 00:36:54,690
The seasons constantly
change in shape and contour
369
00:36:54,790 --> 00:36:57,290
the land underneath.
370
00:36:58,090 --> 00:37:01,090
The world is constantly
adjusting itself.
371
00:37:03,300 --> 00:37:05,260
From the vantage
point of space you can see the
372
00:37:05,360 --> 00:37:09,930
ever-changing planet through
the seasons from snowcapped
373
00:37:10,040 --> 00:37:12,570
mountains to desert plains.
374
00:37:13,540 --> 00:37:15,640
I really never thought
of this until just very
375
00:37:15,740 --> 00:37:19,110
recently you know, I'm seeing
all the seasons at once,
376
00:37:19,210 --> 00:37:21,850
so I'm seeing the winter in
the northern hemisphere and
377
00:37:21,950 --> 00:37:24,920
it's summer in the
southern hemisphere.
378
00:37:26,620 --> 00:37:29,320
If we had no tilt,
nearly half the planet could
379
00:37:29,420 --> 00:37:32,060
be frozen all year round.
380
00:37:32,490 --> 00:37:36,230
Nicole would be fine in
Florida nearer the equator but
381
00:37:36,330 --> 00:37:39,030
growing up in Philly, there'd
be a glacier in my backyard.
382
00:37:48,610 --> 00:37:50,240
♪ ♪
383
00:37:50,340 --> 00:37:52,910
Because of our tilt,
there really are few places on
384
00:37:53,010 --> 00:37:56,580
this planet where
life can't thrive.
385
00:38:06,130 --> 00:38:11,660
♪ ♪
386
00:38:18,670 --> 00:38:23,170
Life on our planet has
synchronized with our seasons.
387
00:38:24,640 --> 00:38:28,710
Raising its young in
the spring and readying
388
00:38:28,810 --> 00:38:31,820
them for winter.
389
00:38:41,790 --> 00:38:47,130
♪ ♪
390
00:38:48,630 --> 00:38:50,930
Four and a half
billion years ago we started
391
00:38:51,040 --> 00:38:54,400
with a smash that created a
tilt that made our seasons,
392
00:38:55,210 --> 00:38:57,910
that gave us the
rhythms of existence.
393
00:38:59,080 --> 00:39:01,650
But more than that,
it gave us the diversity of
394
00:39:01,750 --> 00:39:03,750
life we see around us.
395
00:40:05,610 --> 00:40:09,050
Hard to imagine
but for most of the year,
396
00:40:09,650 --> 00:40:12,980
not a single one of
these bats lives here.
397
00:40:13,720 --> 00:40:17,220
All ten million arrive
from across Africa,
398
00:40:17,320 --> 00:40:21,390
chasing the rains, to
gorge on ripening fruits.
399
00:41:26,230 --> 00:41:30,460
These bats are
essentially a flying forest
400
00:41:30,560 --> 00:41:32,660
delivery system.
401
00:41:40,210 --> 00:41:44,070
The tilt of the earth means cold
moves to hot and hot to cold,
402
00:41:45,880 --> 00:41:48,310
means winter gives
way to spring just as summer
403
00:41:48,410 --> 00:41:50,880
yields to fall.
404
00:41:50,980 --> 00:41:54,150
It means bats fly across
a continent seeding
405
00:41:54,250 --> 00:41:56,820
forests as they go.
406
00:41:58,490 --> 00:42:04,700
The world is connected in 1,000 ways
and all because of one massive whack.
407
00:42:06,000 --> 00:42:08,830
So is the danger all
the in past or is the
408
00:42:08,930 --> 00:42:11,100
calm before another storm?
409
00:42:16,970 --> 00:42:21,210
♪ ♪
410
00:42:28,950 --> 00:42:31,220
This planet
is only here because we've
411
00:42:31,320 --> 00:42:34,490
weathered just enough body
blows to build our world.
412
00:42:35,990 --> 00:42:40,260
So far it's been a perfect storm
that's made our perfect home,
413
00:42:40,360 --> 00:42:44,730
one that feels stable,
safe, reliable.
414
00:42:44,830 --> 00:42:46,830
It isn't.
415
00:42:49,140 --> 00:42:51,170
Imagine yourself on a boat.
416
00:42:56,140 --> 00:42:58,540
Out in the middle of the ocean.
417
00:43:00,850 --> 00:43:03,220
In the middle of a storm.
418
00:43:07,390 --> 00:43:10,020
A big storm.
419
00:43:19,200 --> 00:43:21,900
It's very real to you.
420
00:43:24,710 --> 00:43:27,770
It might even be a
little bit scary.
421
00:43:38,790 --> 00:43:43,160
But if you had the opportunity
to just zoom in on one of
422
00:43:43,260 --> 00:43:48,390
these tiny little droplets and
see that inside that little
423
00:43:49,360 --> 00:43:53,770
droplet are these tiny little
micro-organisms that are just
424
00:43:53,870 --> 00:43:55,970
oblivious to this storm
going on around them.
425
00:44:04,710 --> 00:44:07,650
And if we look at our earth,
if we look at where we live,
426
00:44:07,750 --> 00:44:09,810
this planet that's out in space,
427
00:44:12,950 --> 00:44:17,190
we in some ways go about our
daily lives oblivious to all
428
00:44:17,290 --> 00:44:20,930
the action that's going
on around us, in space,
429
00:44:23,000 --> 00:44:25,900
in the solar system,
in the universe.
430
00:44:29,470 --> 00:44:34,410
This cosmic storm that actually
has a violent nature to it,
431
00:44:34,510 --> 00:44:36,340
is the reason why we're here.
432
00:44:36,440 --> 00:44:39,440
The reason why we're
able to live so comfortably
433
00:44:39,550 --> 00:44:42,010
on this planet.
434
00:44:47,120 --> 00:44:50,060
Before flying in space I
tried really hard to learn
435
00:44:50,160 --> 00:44:52,320
from the people who had
flown before me,
436
00:44:53,130 --> 00:44:56,600
to get some idea of what
the experience meant to them.
437
00:44:59,470 --> 00:45:02,800
These astronauts had seen
the whole earth from space.
438
00:45:04,540 --> 00:45:08,570
While they described it as a
really incredibly beautiful place,
439
00:45:08,680 --> 00:45:10,440
there were also some that said,
440
00:45:10,540 --> 00:45:14,350
they felt a sense
of insignificance.
441
00:45:17,120 --> 00:45:20,290
From the very first time
I looked out the window,
442
00:45:20,390 --> 00:45:22,820
I felt like this is significant.
443
00:45:30,200 --> 00:45:33,630
The significance of it
to me is how something so
444
00:45:33,730 --> 00:45:36,970
overwhelmingly beautiful
could have come from chaos,
445
00:45:37,070 --> 00:45:39,800
violence and collisions.
446
00:45:42,340 --> 00:45:46,650
It's just amazing to think
about this fine line, this,
447
00:45:46,750 --> 00:45:50,050
this balance between
being here surviving,
448
00:45:50,150 --> 00:45:53,390
thriving and not.
449
00:46:01,260 --> 00:46:04,760
The storm
has not been our enemy.
450
00:46:06,700 --> 00:46:09,770
We aren't here in spite of it.
451
00:46:12,240 --> 00:46:14,440
We're here because of it.
452
00:46:21,550 --> 00:46:24,020
And when the storm blows over,
453
00:46:24,120 --> 00:46:26,250
it's anything but
blue skies and rainbows.
454
00:46:28,460 --> 00:46:31,090
Next time...
455
00:46:33,030 --> 00:46:35,590
Here comes the sun.
456
00:46:36,030 --> 00:46:40,900
It is the fuel of life,
but it is not our friend.
457
00:46:44,600 --> 00:46:47,540
The sun is a planet killer.
458
00:47:02,620 --> 00:47:04,660
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