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In this video, you will learn about Betelgeuse, one of the brightest and largest stars in the night sky, and why it might soon explode into a spectacular supernova. You will also find out how this event will affect the Earth and what we can learn from it. Are you ready to witness one of the most amazing phenomena in the universe? Let's dive in! #brightside #brightsideglobal TIMESTAMPS: 0:01 Betelgeuse 08:55 Explosion that cracked open Earth 18:33 Explosion of planets This video is made for entertainment purposes. We do not make any warranties about the completeness, safety and reliability. Any action you take upon the information in this video is strictly at your own risk, and we will not be liable for any damages or losses. It is the viewer's responsibility to use judgement, care and precaution if you plan to replicate.
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00:00Betelgeuse, a red supergiant.
00:02This ball of boiling plasma is one of the largest stars in our galaxy, and one of the brightest.
00:07It's about 500 times larger than the sun.
00:10But Betelgeuse is pulsating, getting bigger and smaller.
00:14At its peak, it becomes 800 times its average size.
00:18If this star were a bucket, it would fit about 300 million suns,
00:23even though its weight is only 17 times greater.
00:26And here, about 500 light-years away, is Earth.
00:30We launch our faster-than-light spaceship and set off on our journey to Betelgeuse.
00:35A few seconds, and we've already traveled 240,000 miles and now are close to the moon.
00:42That's nine and a half trips around the Earth.
00:45A traditional rocket-powered spacecraft would take three days to get here.
00:50We're near Mars now.
00:52The flight to the Red Planet usually takes about seven months.
00:56Several rovers are now at work here, as well as the first-ever flying drone, Ingenuity.
01:01The surface of Mars is three times smaller than that of Earth.
01:04The planet is also ten times lighter.
01:07People hope to build a human colony here soon.
01:09Right beyond Mars, we have to wiggle and constantly dodge space rocks.
01:14This is the asteroid belt.
01:15It contains debris and space objects of different sizes and shapes.
01:19The biggest of them is Ceres.
01:22Its surface is slightly larger than the area of Argentina, and its weight is about 1% of the moons.
01:28The total weight of the entire asteroid belt is 25 times less than the moons.
01:33Next, we pass gas giants Jupiter and Saturn.
01:37These are the largest planets in the solar system.
01:39They're also the heaviest, even though they don't have a solid surface.
01:43Then, we travel by Uranus and Neptune.
01:46They're called ice giants.
01:48And at the very edge of the solar system, we see Pluto.
01:52It was once considered a full-fledged planet, but now it's not even on the list.
01:57After that, we're 4.3 billion miles away from our home.
02:01It took the New Horizons space probe about nine years to get here.
02:06Hold on to your seat.
02:07We're speeding up!
02:08We're passing through the Kuiper belt.
02:10There are lots of asteroids and blocks of ice here.
02:13These are some of the oldest building materials in our solar system.
02:17Billions of years ago, our whole world looked like a cloud of these asteroids.
02:21We're traveling further through dark space and reach the edge of the solar system.
02:26The heliosphere.
02:27All this time, we've been moving with the solar wind.
02:30But now, it starts to slow down, collides with the interstellar wind, and heats up.
02:36This is called the termination shock.
02:39The Voyager 1 space probe got to this point in December 2004.
02:44We're moving to the region where the heliosphere ends and interstellar space begins.
02:49This is the heliopause.
02:50In 2012, Voyager crossed this boundary and became the first-ever human-made object in interstellar space.
02:58But the message from Voyager reporting this event came to Earth almost a year later because of the huge distance.
03:04It took 35 years for Voyager 1 to travel all this way.
03:10And here it is.
03:11The probe is as long as a car and weighs like two motorcycles.
03:15You can see a gold plate on its hull.
03:17It's a message from people to potential civilizations out there.
03:22It has pictures of Earth's landscapes, recordings of human speech, and our DNA.
03:27As of 2021, Voyager has been operational for almost 43 years.
03:33The probe has traveled 14 billion miles.
03:35That's like 152 Earth-to-the-sun distances.
03:39And it's still making its way through space at 38,000 miles per hour.
03:44Now, we're approaching the nearest star to our solar system.
03:47It's Proxima Centauri.
03:49We're so far from home that even light needs more than four years to travel this distance.
03:54If we used a traditional rocket, the trip would take us 73,000 years.
04:00The reason we wanted to get here was because of an Earth-like planet called Proxima Centauri b.
04:06It's 10% larger than Earth and slightly heavier.
04:09It lies in the habitable zone of its host star.
04:12It means that water might exist on the planet in its liquid state.
04:16And there can be life that forms here.
04:18But the star itself occasionally produces flares.
04:22Recently, its brightness increased almost 1,000 times.
04:26During that time, it emitted so much radiation that even if there were some forms of life on the planet,
04:32they probably ceased to exist.
04:34We're now more than eight light years away from Earth.
04:37The brightest star in our night sky is Sirius.
04:41Seriously.
04:42It's so bright that you can see it even during the day.
04:45But in reality, there are actually two stars, Sirius A and B.
04:50They orbit around a common center of gravity.
04:53And these stars are moving toward our solar system at almost 5 miles per second.
04:57That's the same as the maximum speed of a top-of-the-line supercar on Earth.
05:02Foot down!
05:03And we've arrived at a potentially habitable planet 39 light-years away from Earth.
05:09This is TRAPPIST-1D.
05:11Its host star is a white dwarf.
05:13It's a cold star, 10 times smaller and lighter than the sun.
05:17There are seven planets around it.
05:20But TRAPPIST-1D is the most similar to Earth.
05:23It's only 30% smaller and 3 times lighter.
05:26But it has a rocky surface, and the temperature here is 48 degrees Fahrenheit.
05:31You'd feel comfortable here wearing a light jacket.
05:34There might be an atmosphere, mountains, seas, and oceans here.
05:38Which means this planet might be suitable for a human colony.
05:41But it would take about 677,000 years to get here using traditional rockets.
05:48And here's our main goal, Betelgeuse.
05:51It'd take nearly 8.7 million years to travel here from Earth in a current-day spacecraft.
05:57This star is so big that our ship looks like a grain of sand on a giant beach.
06:01We have to jump back in time to find out what happened to this star.
06:06First, there was a beautiful nebula.
06:08It's a cloud of multicolored space dust and debris.
06:11Then, it began to shrink under its own weight.
06:14In the core of the nebula, a nuclear reaction began.
06:18Boom!
06:19And the star was born.
06:20At first, Betelgeuse was very massive and hot.
06:24But it didn't expand and remained stable.
06:26Let's look into its heart.
06:28The nuclear reactions in the star's core create a lot of heat and energy.
06:33This energy produces the force that pushes on the walls of the star from the inside and causes it to
06:38expand.
06:39But at the same time, the star is very heavy.
06:42That's why gravity pushes on it from the outside.
06:45If these two forces are balanced, the star remains stable.
06:48But, over time, the star runs out of its fuel, helium and hydrogen.
06:54That's when heavier elements in the core join the nuclear reaction.
06:58When they burn, they release more energy and heat than gravity can hold.
07:03And the star starts expanding.
07:05That's what's happening to Betelgeuse right now.
07:08It's already so big that if you put it in the center of our solar system,
07:12its edge would touch the asteroid belt between Mars and Jupiter.
07:16Betelgeuse will continue to expand until it exhausts its fuel completely.
07:21Then, the gravity will win.
07:23The star will shrink in size.
07:24And then, an enormous boom will happen.
07:28A supernova explosion will be so blinding that Betelgeuse will shine brighter than the moon in the night sky.
07:34Luckily, Earth is too far away for this explosion to cause any harm to people.
07:39A strong stream of matter that will be ejected from the explosion site won't reach the solar system until 6
07:45million years later.
07:47Even so, the solar wind will stop this flow, so we'll be safe.
07:52Betelgeuse is likely to explode at any time in the next 10,000 years.
07:56But some scientists say it won't happen in the next 100 millennia.
08:00Back to the moment before the explosion of Betelgeuse, there can be another, more interesting scenario.
08:07Gravity might compress the massive core of the star with such force that a black hole will appear in its
08:13place.
08:14Black holes are the heaviest objects in the universe.
08:17They have incredible gravitational force.
08:19Even light can't escape their gravitational trap.
08:23The Betelgeuse black hole will begin feeding on cosmic dust and whatever is left of the star.
08:28All this debris and light from other stars will get frozen near the event horizon of the growing black hole.
08:35For the first time in history, we'll be able to watch the birth of this mysterious object.
08:40But in reality, Betelgeuse is too light to become a black hole.
08:44Most likely, after the explosion, it'll turn into a white dwarf that will gradually fade until it becomes invisible.
08:56Back in 2018, the biggest active underwater eruption ever happened.
09:02At least, the one that we could officially record.
09:04Scientists followed earthquakes that struck the area in the western Indian Ocean off Madagascar.
09:11Between 2018 and 2021, over 11,000 earthquakes struck a small island called Mayan between Madagascar and Mozambique.
09:20The strongest one had a magnitude of 5.9.
09:24Until then, this area had been pretty peaceful.
09:28There had only been two earthquakes recorded over 50 years.
09:31Along with regular earthquakes, there were also some unusual seismic hums.
09:36Like earthquakes at pretty low frequencies, forming deep underground.
09:40People couldn't feel those hums at the surface.
09:43But researchers around the world discovered them and realized they were related to volcanic activity no one actually noticed coming.
09:51Something strange happened.
09:53That underwater eruption created a giant skyscraper-sized volcano.
09:58This new underwater volcano turned out to be around one and a half times the height of One World Trade
10:04Center in New York,
10:05and almost ten times bigger than the Statue of Liberty.
10:08The area where it appeared had been explored in 2014, but it was almost flat, peaceful, and empty back then.
10:17Now, there is an actual volcano nearly 8,500 feet below sea level.
10:23The volcano gets its magma from a super-profound reservoir located nearly 34 miles underground.
10:30It's the deepest reservoir of volcanic magma that we know about.
10:34The Earth has layers, and the middle one is kind of chunky.
10:38It's very much like peanut caramel filling many chocolates have.
10:42Research shows there are probably hunks of oceanic crust deep inside the Earth's liquid mantle.
10:48They're stuck there, creating large lumps in something that was supposed to be a smooth layer.
10:54Our planet has a rigid outer layer.
10:57It includes a hot upper mantle and cracked crust.
11:00The hot mantle moves and churns all the time, making the crust at the surface move, too.
11:06This way, the oceanic crust dives into the depths and makes huge magma plumes go up toward the planet's surface.
11:14Scientists even found an ancient piece of the Pacific Ocean hundreds of miles underneath China.
11:19Those are the old remains of the Pacific seabed from long ago, and they were pulled downward below Earth's surface
11:27into the mantle transition zone.
11:29This rocky slab that used to be at the bottom of the ocean is made of the crust and some
11:35solid parts of the upper mantle.
11:37Most of the volcanic activity on our planet happens where we don't even see it, under the surface of the
11:43ocean.
11:44About 70% of all volcanic activity happens in the oceans, and mostly in the area of the South Pacific,
11:51with over 1,100 volcanoes squeezed into that area.
11:55Coastal cliffs, mountain changes, soils, and sediments that line valleys.
12:00These are only a small portion of the rocks on our planet.
12:04Oceans hide so much more deep down below the Earth's surface.
12:08In between the Earth's surface and its core is the mantle.
12:12It's a warm, thick layer of rock that moves and flows constantly.
12:16Some hundreds of miles below, there's a place where diamonds grow.
12:21As they form, they go through high temperatures and pressure, after which they eventually freeze.
12:26That way, when they arrive at the surface, scientists can explore their structure, find out how they formed, and understand
12:33better what's going on in the depths of our planet.
12:37Thanks to diamonds, they realized the mantle was very wet, and it possibly contained much more water than all the
12:43oceans on Earth.
12:45Our planet is eating up its own oceans.
12:48As its tectonic plates move, dive, and go beneath one another, they drag huge amounts of water into the Earth's
12:55interior.
12:56The water beneath the surface of our planet can help with developing magma and lubricate faults, which actually makes earthquakes
13:04more likely to happen.
13:05Water is actually stored in the minerals.
13:08It gets incorporated into the planet's crust when new oceanic plates form.
13:12They go through the process of bending and cracking as they grind under other plates, and huge amounts of water
13:20then go deep into the crust and mantle.
13:22Scientists research an area that's 18 miles under the surface.
13:26They realize these zones pull 3 billion teragrams, which is more than 2 billion pounds.
13:33Any ocean is like a whole new world.
13:36There are incredible sceneries below the surface.
13:39Magnificent waterfalls, lakes, and rivers.
13:41There are thick layers of salt beneath the seafloor, and rivers and lakes form because seawater goes through those layers
13:48and dissolves them, creating something that resembles pools.
13:52The dissolved salt makes the surrounding water denser.
13:56That water then settles there, which eventually forms underwater lakes or rivers.
14:01But there are also mountain chains, trenches, canyons.
14:05There's a canyon in the Bering Sea with more than 8,500 feet of vertical relief.
14:11This makes the Grand Canyon look way smaller than it is, since the underwater canyon is nearly 2,500 feet
14:18deeper.
14:20Deep parts of the ocean are really cold.
14:22The temperature of the water can be about 40 degrees.
14:25But at the bottom, water can get boiling hot.
14:29There are hydrothermal vents in the seafloor.
14:32Those are the hot springs located at the edges of tectonic plates.
14:36The water they release can reach a temperature of up to 750 degrees Fahrenheit.
14:42But the pressure at such depths is very intense.
14:45So intense, no human being can handle it.
14:48Still, it's the pressure that keeps the water from boiling.
14:52Ocean depth is on average 2.3 miles.
14:55Light waves can still enter at 3,280 feet, even though it's in a very small amount.
15:02So all the mysteries hidden below that point remain in total darkness.
15:06The actual illuminated part of the ocean goes until 600 feet.
15:11Even though the sun gives us light, most of our planet is dark all the time.
15:16It's all because of the oceans, covering over 70% of our planet.
15:20The loudest sound that came from an ocean, and of the loudest sounds ever recorded, came
15:26from an ice quake.
15:28It was so loud, researchers picked it up by sensors more than 3,000 miles away.
15:33There was a seismic activity that made frozen ground break down.
15:37The Antarctic ice sheet is bigger than the continental part of the United States and Mexico together.
15:43A big iceberg from Antarctica holds over 20 billion gallons of water, which could make
15:49a five-year water supply for a million people.
15:52Humans can generally drink sea ice, although we can't drink seawater.
15:56As time goes by and the ice ages, the brine trapped between ice crystals drains out.
16:03That way, ice becomes fresh enough to consume it.
16:06If all the ice sheets and glaciers we have on the Earth melted at the same time, the sea
16:11level would rise another 260 feet, which is just a little shorter than the Statue of Liberty,
16:17the height of a 26-story building.
16:20Clams live long enough to tell us more about oceans past.
16:24Ancient mollusks could live for more than 500 years.
16:27To learn more about a tree, you can use its rings to see how old it is.
16:31To learn how old a mollusk is, you can examine its rings within the shell and tell.
16:37This is also how scientists get information about the ocean, climate, and whatsoever.
16:42Clams can help take a look at what happened about a thousand years ago.
16:47The Earth doesn't have four but five oceans now.
16:50The new one, called the Southern Ocean, was officially recognized only a few months ago.
16:55It borders the Atlantic, Pacific, and Indian Oceans, so scientists couldn't agree if it's
17:01really a new ocean or just part of the colder regions of these three.
17:05We don't only divide oceans on maps.
17:08Each has different conditions for unique marine species.
17:11For example, the Southern Ocean has leopard seals, orcas, menky whales,
17:17emperor penguins, and other animals that live in cold, icy seas.
17:21It's also home to krill, small creatures that look like shrimp,
17:25and are food for many bigger animals that live there.
17:28Life on our planet started about three and a half billion years ago.
17:33I wasn't around that.
17:34It's still a mystery how and when exactly,
17:37but some theories say life could have first emerged in the depths of the ocean.
17:42A few years ago, scientists found microscopic tubes and filaments within rocks formed about
17:48four billion years ago.
17:50These rocks are fragments of ancient oceanic crust.
17:53Also, these tiny tubes and filaments are similar to microbes that can still be found on
17:59hydrothermal vents in deep parts of the ocean.
18:02The idea is these living cells found conditions to stay alive in tiny rocky pores inside the
18:09chimneys of those vents, and started the amazing adventure of the evolution of life on our planet.
18:16When you explode planets, things get red hot.
18:20Atmospheres are stripped away.
18:22Stuff is flying apart.
18:24Everything collapses.
18:26The world becomes brighter than a dozen suns.
18:29You squeeze your eyes shut and cover your ears.
18:32Your hair stands on end.
18:34The sheer power of a cosmic blast is terrifying.
18:38Some time before the explosion,
18:41you're hovering in almost complete darkness.
18:43Below, you see the moon, or what you think looks like the moon.
18:48The surface of this light-colored sphere is pockmarked with craters left by meteorites.
18:54You see huge, steep hills, stretching for miles.
18:57It's Mercury.
18:59And right now, you're going to explode it.
19:03As if in slow-mo, you watch the planet fall apart.
19:07And then, in the blink of an eye, you see a wall of debris closing in on you.
19:13First, giant chunks of rock.
19:16Those are all that's left of the planet's solid crust and rocky mantle.
19:20The appearance and structure of the debris flying in your direction changes.
19:25Now, the stuff looks liquid, like splashes of quicksilver.
19:29That's Mercury's metallic core bursting apart.
19:33It used to take up 85% of the planet's volume.
19:36And finally, it's a firework of solid pieces again.
19:41It's the planet's solid core.
19:44The explosion is so powerful, it knocks Earth into a different orbit.
19:48The sun hiccups and swallows down an enormous cloud of dust.
19:53That's everything Mercury has left behind.
19:56But don't worry.
19:57Our solar system won't lose any planets.
19:59This whole explosion thing is only a temporary experiment.
20:02Once you're done watching the show, you press another button.
20:06And the planet gets back together.
20:08As if you've hit rewind.
20:11You approach the next planet on your way.
20:14Its surface is hiding under a super-dense atmosphere, made up of carbon dioxide.
20:20If you decided to land on Venus, you'd watch thick clouds of sulfuric acid pass by.
20:26You'd see the planet's surface.
20:28Reddish-brown, dry, and incredibly hot.
20:31But you'd probably walk across flat, smooth plains, covering two-thirds of the planet's surface.
20:37You'd gawk at volcanoes littering Venus.
20:40All 1,600 of them.
20:43Unfortunately, you won't be able to do that.
20:45Because you press the button.
20:48Boom!
20:49Huge chunks of basalt fly away from the center of the explosion.
20:53That used to be the planet's 12-mile-thick crust.
20:57Then you spot bright, burning meteors flying towards you at incredible speed.
21:02Those are chunks of Venus's molten, rocky mantle.
21:05The fire rain seems endless.
21:08Maybe because the mantle was 1,200 miles thick.
21:11But that's not the most massive part of the planet.
21:14The power of the explosion forces apart Venus's metallic iron core.
21:19This core used to be twice as wide as the mantle.
21:24You reach the blue marble of your home planet.
21:27What will its insides look like, scattered in space?
21:31From above, Earth looks pretty.
21:3471% of its surface is blue, because of all that water, seas, and oceans.
21:39There are also areas of green, yellow, and brown and white swirls.
21:44You press the button.
21:46The planet bursts apart in a hailstorm of rocks.
21:49They're what's left from Earth's thin crust and much, much thicker mantle.
21:54It used to take up nearly 84% of the entire planet's volume.
21:59You see the rocky rain change into something way more liquid.
22:03It's scorching hot iron and nickel that used to make up Earth's outer core.
22:08The metals weren't under enough pressure to be solid.
22:10The bang is so powerful that it takes apart Earth's inner core.
22:16It used to be a solid ball of iron and nickel.
22:19After the pieces fly apart, they follow their own orbits around the Sun.
22:24The most massive chunks crash into the Moon,
22:26and some travel further and get swallowed by our star.
22:31You can't linger.
22:33The red planet is waiting for you.
22:35The surface of Mars is covered with rusty-colored dust.
22:38The thickness of the dust layer varies from area to area.
22:42But in most places, it's seven feet thick.
22:46The ground is colored gold, brown, tan, and even greenish.
22:51The hue depends on the minerals that make up the soil.
22:54The planet's surface is rocky.
22:56It's covered with dry lake beds, craters, volcanoes, and canyons.
23:03Bang!
23:04Mars is a rocky planet.
23:06You have to dodge mountain-sized chunks of crust made up of volcanic basalt rock.
23:11What you see next looks as if you've blown up huge amounts of soft rocky toothpaste.
23:17That used to be Mars' mantle, composed of oxygen, silicates, and other minerals.
23:22And then, the flying pieces get solid again.
23:25Ah, it's the planet's core's turn.
23:28It was solid, made mostly of iron, nickel, and sulfur.
23:33Billions and trillions of fragments of all sizes,
23:36from a small moon to pieces several feet wide,
23:40get launched in all directions.
23:41But only very few parts have enough momentum to leave the solar system.
23:46The whole event slightly changes Earth's orbit.
23:49And the temperature on our planet goes up by 18 degrees Fahrenheit.
23:55You leave rocky planets behind and close in on the first gas giant on your way.
24:01It's Jupiter.
24:03Thick brown, yellow, red, and white clouds hide its surface.
24:08They make the planet look colorful and beautifully striped.
24:12You hit the button.
24:14This time, the view is different.
24:16Instead of chunks of solid crust,
24:18you see jet streams of gas accelerating from the planet's center.
24:22It's what used to be Jupiter's atmosphere,
24:25made up of hydrogen and helium gas.
24:27In no time, the matter hurtling away to space turns liquid.
24:31That's hydrogen changing its form under immense atmospheric pressure,
24:36closer to the center of the planet.
24:37A bit later, the liquid is already a mixture of metallic hydrogen and helium.
24:42And finally, something solid.
24:45It was probably Jupiter's core.
24:4714 to 18 times the mass of Earth.
24:51The gas giant's diameter was about 90,000 miles.
24:55But the blast lasts no more than half a second.
24:58The explosion of Jupiter is so strong,
25:01it evaporates smaller planets like Mars and Earth.
25:05The sun remains pretty much untouched.
25:07It gets hotter and kind of unstable for a bit.
25:10But it doesn't last long.
25:11The next gas giant on your way is Saturn.
25:15At first sight, it looks as if the planet has a surface.
25:19The seemingly solid yellowish-brown sphere is surrounded by layers of clouds.
25:24Saturn's trademark rings are awesome and colorful.
25:27Gray, beige, and tan.
25:29They're actually groups of tiny ringlets
25:32that are made up of floating chunks of water, ice, rocks, and dust.
25:36These chunks range in size from specks
25:39to massive skyscraper-sized pieces.
25:41While orbiting Saturn, they keep colliding,
25:44and larger pieces get shattered.
25:47You're surprised to see that the rings aren't perfectly round.
25:51They have bends caused by the gravitational pull from the nearby moons.
25:5553 of them are confirmed.
25:57Titan, an icy world bigger than our moon,
26:00and even Mercury, is the largest.
26:04What you see looks eerily similar to what happened when you exploded Jupiter.
26:09There's only one difference.
26:11Saturn's rings break apart,
26:13sending rocks and ice flying into space at incredible speed.
26:17The largest pieces crash with the planet's moons,
26:20wiping away the smallest of them.
26:23You see streams of gas,
26:24mostly hydrogen and helium,
26:26with a bit of methane, ammonia, and water.
26:29They're moving at breakneck speed
26:31away from where the center of the planet used to be.
26:34After that,
26:35splashes of liquid matter.
26:36That's liquid hydrogen
26:38that later turns metallic.
26:40And finally,
26:41the chunks of the solid core
26:43made up of rocky materials.
26:45You're looking at a beautiful blue-green sphere
26:48of the ice giant Uranus.
26:50The planet gets this unusual hue
26:52when the light from the sun
26:53gets reflected off the planet's surface.
26:56Plus, Uranus's atmosphere
26:58is mostly hydrogen and helium,
27:00with traces of methane gas
27:02that absorb the red light.
27:04Anyway,
27:05BANG!
27:06This time,
27:07it's massive blobs of ice
27:09that are hurtling in your direction first.
27:11They used to be the part of the planet's ice mantle
27:14that once made up 80% of the planet's volume.
27:17But why does this ice look liquid?
27:19On Uranus,
27:21frozen liquid isn't solid like on Earth.
27:23Ice is a hot, dense fluid,
27:26made up of water,
27:27ammonia ice,
27:28and methane.
27:29It's often called
27:30the Water Ammonia Ocean.
27:33After the bizarre ice rain,
27:35you see solid pieces
27:36of the planet's rocky core.
27:38It used to be small,
27:39no more than half the Earth's mass.
27:42Some of Uranus's moons
27:43get pulverized in the explosion,
27:46and several even get ejected
27:47out of the solar system.
27:49The explosion also slightly shifts
27:51Neptune's orbit.
27:53And the last planet on your way,
27:55Neptune.
27:56It looks blue because of a layer
27:58of swirling gas
27:59and permanent clouds.
28:01No time to linger.
28:02Boom!
28:04The planet doesn't have a solid surface.
28:06That's why,
28:07after pressing the button,
28:09you see Neptune's liquid mantle bursting.
28:11It looks like a water-filled balloon
28:14thrown down from the 50th floor.
28:15This sends splashes of water,
28:18ammonia,
28:18and methane ices
28:20away into space.
28:21It's followed by lava-like remains
28:24of the planet's mantle.
28:25It used to be liquid,
28:27red-hot,
28:27and rich in methane,
28:29ammonia,
28:30and water.
28:31That's what's left
28:32from Neptune's solid core,
28:34made up of iron
28:35and other metals.
28:36Let's do it!
28:37Until then.
28:37You
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