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Delve into the captivating realm of Earth's celestial phenomena in this mesmerizing video. Experience the breathtaking splendor of the celestial wonders and let your imagination soar.
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00:02So, what would it look like to go around Earth at the speed of light?
00:06Well, I'm guessing pretty quickly, but let's get to the details.
00:10Traveling around Earth at the speed of light would be an astonishing sight to behold.
00:15If we could magically achieve such a feat, here's what it would look like.
00:19As you kicked off your speedy journey, everything around you would get blurred.
00:23The landscape would transform into a streak of dazzling lights,
00:27like a cosmic fireworks show on Fast Forward.
00:30The world would appear distorted, with buildings and landmarks merging into streaks of brilliance as you zip past them.
00:37The familiar features of cities would become blur colors, blending together in a mesmerizing display.
00:43Day and night would blend seamlessly, since Earth's rotation would become an indistinguishable whirlwind.
00:50However, keep in mind that at the speed of light, time itself would behave strangely.
00:55To you, the journey might feel instantaneous.
00:57But when you return, you'll find that much more time has passed for everyone else.
01:03It's like taking a lightning-fast trip while the rest of the world ages.
01:07Sadly, achieving the speed of light is currently beyond our technological capabilities.
01:13Okay, but do you know what the speed of light actually is?
01:16In the vast expanse of empty space, the velocity at which light travels is an astonishingly precise figure.
01:24This translates to approximately 186,000 miles per second, a universally recognized constant notated as c, or the speed of
01:34light.
01:34Drawing from the revolutionary principles of physicist Albert Einstein's theory of special relativity, which forms the bedrock of modern physics,
01:43We come to a remarkable realization.
01:46Nothing in the entire universe can surpass the velocity of light.
01:51According to this theory, as an object comes close to the speed of light, its mass spirals toward infinity.
01:57Consequently, the speed of light operates as an indisputable cosmic speed limit, casting its influence over the entirety of the
02:05universe.
02:06Such is the fixity of light's rapidity – yes, I have a thesaurus – that it finds purpose in defining
02:13internationally accepted units of measurement, like the meter and mile.
02:17The United States National Institute of Standards and Technology reveals that the speed of light even contributes to the definition
02:24of the kilogram and the temperature unit known as the kelvin.
02:28Now, let's talk about the speed of dark.
02:31Darkness, the elusive counterpart of light, seemingly travels at the speed of light itself.
02:37In reality, darkness doesn't exist as a distinct physical entity, but is rather the absence of light.
02:44Whenever you block out a substantial portion of light, like when you cup your hands together, darkness fills the void.
02:51When discussing speeds, we can think of darkness as what emerges once the light ceases to illuminate, and it appears
02:59to move at the speed of light.
03:00Still with me?
03:02Yeah, my brain is starting to ooze out my ears, too.
03:05Anyway, let's take a journey to distant space, far away from any light sources, such as the radiant sun.
03:13Imagine having a light bulb attached to the nose of your spaceship, emitting its luminosity in all directions through space
03:20at the speed of light.
03:21Now, if you momentarily turn off the light bulb and then turn it back on, a fascinating phenomenon occurs.
03:29Light continues to travel outward in all directions from before you dim the bulb, and subsequent light beams follow after
03:37you restore its glow.
03:39However, amidst these expanding spheres of light, an intriguing region emerges.
03:44It's the space in between there was no light because none was generated during the brief period when the bulb
03:50was off.
03:51So, in this cosmic spectacle, darkness appears to join the journey alongside light, seemingly chasing it at the speed of
03:59light.
04:00It reminds us that even in the absence of light, there is an enchanting interplay between shadows and illumination,
04:07each playing its unique role in the vast tapestry of the universe.
04:17You're relaxing in your room and streaming some good tunes when suddenly the net works down.
04:22You try rebooting your phone, but there's still no connection.
04:26Out of nowhere, your sister barges into your room in panic.
04:29She's screaming something about rings.
04:32Boxing rings? Wedding rings? Rings on the tub?
04:34She's not making any sense.
04:36So, she dragged you out of the house and showed you the sky.
04:39You take a look up and see streaks of objects forming miles above the Earth's surface.
04:44Her connection seems to work.
04:46Your sister can't help but join the crowd and takes a bunch of selfies with the sky.
04:50You run to the TV in your living room to check out the news.
04:54Scientists are warning about a coming catastrophe and explaining that everyone should remain indoors.
04:59Even though it's a cloudless day in the middle of summer, the weather seems to be getting colder and colder.
05:05Suddenly, the signals cut off.
05:07Other channels show nothing either.
05:08Then, you see your neighbors packing their bags and heading out.
05:12Others follow suit.
05:13You hesitate a bit, but decide to do the same in the end.
05:17Your sister is still outside taking selfies when you urge her to come along with you to seek some answers.
05:24The two of you hop in your car and drive out into the city.
05:28The rings above seem to be gaining more mass with each second.
05:31You and your sister are getting colder and colder.
05:33You head to the university to see if anyone knows anything, but there's no one there.
05:38Only one parked car on the line.
05:40And it's a good thing you recognize that car.
05:43You and your sister rush in and find the astronomy professor doing some quick calculations and trying to figure out
05:49why all this is happening.
05:50He urges you to take seats and begins explaining.
05:54No one knows what this is all about, but it's limiting the sun's exposure on Earth.
05:58Which explains why it's getting colder by the minute.
06:01Why the rings are getting thicker is a mystery, too.
06:04On Saturn, the rings are made up of ice and rock particles.
06:07They can be as small as an ant or the size of a bus.
06:10The rocks could be left over meteor debris or even remnants of dwarf planets.
06:15But since Earth is so close to the sun, ice wouldn't be something you'd find floating above us.
06:20With all these rocks piled up, they block the Earth's access to sun to warm us up and give us
06:26light.
06:26The professor goes on to explain that Earth will enter a new ice age.
06:30And oxygen levels will deplete within a year's time, unless those newborn rings disappear anytime soon.
06:37This also explains why there's no connection.
06:39The rocks that form the rings are hitting and breaking the satellites.
06:43Suddenly, you hear a loud ringing noise outside.
06:46The three of you head outside and see a helicopter blasting an alarm with a red light flashing.
06:51Everyone to your homes now. This is not a drill. Everyone head home.
06:56You get in your car with your sister, but the roads are jammed.
07:00You have to go on foot, which will take two hours.
07:02There's no way anyone can remain outdoors.
07:05You venture out seeing everyone stuck on the road.
07:07They're all arguing with each other and causing chaos.
07:10You try not to get caught in the middle of anything and sneak your way to the highway.
07:15With the rings getting thicker, less sunlight is breaking through.
07:18This ice age info is stuck in your head, chilling you even more.
07:22You take a deep breath and see a thin mist coming out of your mouth.
07:26The sky is getting darker and you're still not home yet.
07:29Your sister is tired and needs to rest, but you urge her to move on.
07:33You find an abandoned clothes shop and head inside.
07:36The store clerks are actually giving away thick jackets for everyone to wear.
07:40You grab a couple and slip them on.
07:43Only one more hour to get home, but the sky is completely dark.
07:47There's no way you and your sister can go out in such conditions.
07:50So, you decide to camp up in the clothes shop.
07:53They set up a mini bonfire in the middle of the shop and create makeshift sleeping bags with the rest
07:58of the unused clothes.
07:59Luckily, there's enough food to feed everyone, including you and your sister.
08:06It's the middle of the night.
08:07The fire goes out and you can't see outside the shop.
08:11You head to the window and open it up.
08:13A huge pile of snow spills in and wakes everyone up.
08:17It's the middle of August and a snowstorm formed overnight.
08:20Everyone is freezing and they start the fire anew.
08:24There's no radio or any way to find out what's happening.
08:27The wind picks up and starts shaking the shop.
08:30Things start falling off the shelves, but you and everyone else are cozy by the fire.
08:34The next day, you look outside and see the entire area covered in snow.
08:39You live in a sunny place where it barely rains, and the rings in the outer atmosphere are even bigger
08:44than last night.
08:45Out of nowhere, a truck filled with people pulls over, and the driver tells you there's a shelter for everyone
08:52some miles away.
08:52The truck has chains all over the tires and is equipped for the worst snowy conditions.
08:58Even though it's morning, the sky is pretty dark.
09:01You and everyone else hop in.
09:03Abandoned cars, some with their doors still open, are scattered all over.
09:07The truck drives around them or just smashes through the ones in the way.
09:11It pulls over next to an ambulance and takes all the equipment to help the ones in need.
09:16You drive past your neighborhood and see your entire house covered in snow.
09:20The large tree in your backyard has fallen under the weight of the snow and broken the roof, allowing snow
09:26to flood in.
09:27The truck speeds through and gets to the shelter, which, to your surprise, is the mall.
09:33You get out and see many of the townspeople being led to various stores that have now turned into dorms
09:38and health units.
09:39You're left in a sports store with a bunch of other people.
09:42Your sister has also been able to bunk with you.
09:45And to your luck, you see the professor helping out some people.
09:59But shortly after that, a loud explosion blasts through the mall and shatters glass screens.
10:05Everyone ducks for cover.
10:07You see people running outside.
10:08You head out and see a large metallic object lying in front of the mall entrance.
10:13There are people crowding the entire area, so it's not easy to see what all the fuss is about.
10:19But after getting a closer look, you find out it's a satellite fallen from orbit.
10:24It crashed in the front yard and made the boom.
10:26There were also reports of other satellites crashing on Earth in the most random places.
10:31That means all communication has been wiped out of the map.
10:34You run back inside the mall to await what happens next.
10:38You look at your sister in fear, not knowing that the new ice age has just begun.
10:49One year later
10:52You're relaxing in your bunker when your sister barges in, freaking out.
10:56The rings are still there, but it's something else now.
10:59You run outside and see everyone gathering around and looking at the sky.
11:04Within a year, temperatures have dropped to freeze the entirety of the Earth's surface.
11:08Deserts and tropical jungles have turned into icy wastelands.
11:12More than half of the wildlife went extinct.
11:15And trees are as rare as a four-leaf clover, which means oxygen levels have dropped significantly.
11:21Most of the population, or what's remaining of it, live with oxygen tanks,
11:25with scientists still trying to crack the case of the rings.
11:28Exactly what the professor predicted.
11:31But up in the sky, rocks seem to be falling down and crashing all over.
11:36It starts off far away, but then the rocks begin to fall down close by.
11:41You and everyone else run back into the mall,
11:43which has been covered with a layer of metal to keep the warmth inside.
11:47It should be pretty safe in there.
11:49If the rocks are falling down, that means the rings are dissipating.
11:53Suddenly, you're full of hope that the ice age might be over soon.
12:00All right, let's imagine that humans have evolved to survive on very little oxygen.
12:05That means the Earth is now a no-go zone for us.
12:08And let's say that now we can live only on planets with little to no oxygen.
12:13It's time to build new homes on Mercury and Jupiter.
12:16So let's explore what life would be like if that happened.
12:19As you set foot on Mercury, you'll immediately notice how crazily bright it is.
12:25Mercury, being the closest planet to the sun, is a never-ending summer vacation.
12:30Right now, it's scorching hot at a sizzling 800 degrees Fahrenheit.
12:34But since we don't need any water or oxygen,
12:37our bodies have adapted to the blazing heat and dry conditions of Mercury.
12:41Instead of overheating, our skin possesses a special protective layer that helps us handle these conditions.
12:47So, we're able to live there without any discomfort.
12:50How cool is that?
12:52On Mercury, the air is very thin.
12:54As a result, the sky there appears mostly dark and empty.
12:58The surface, however, is pretty colorful.
13:00It can appear orange and golden due to the planet's rocky terrain and the intense sunlight.
13:05All this creates some captivating views.
13:08Our activities would be super exciting.
13:10The gravity on Mercury is very weak.
13:12Almost three times weaker than Earth's.
13:15So, imagine gliding through the air with incredible wingsuits,
13:18effortlessly soaring above the molten landscapes.
13:21So many possible cool tricks to show off.
13:24The buildings in this world are both imaginative and practical.
13:28They're made of special materials that can handle the heat and shine with a metallic gold color,
13:33reflecting the scorching sunlight.
13:36As you can see, our life in this small, hot world can still be pretty exciting.
13:42But let's move on to Venus.
13:44Now we've got ourselves quite a workload.
13:47This is the wildest and wackiest planet in the neighborhood.
13:51Temperatures there sizzle at a mind-boggling 900 degrees Fahrenheit.
13:55But guess what?
13:56Our bodies are cool with it.
13:58We can handle extreme temperatures.
14:00The winds there are crazy fast, reaching speeds of 224 miles per hour.
14:05Amongst them, we spot mysterious dark streaks that refuse to budge.
14:09Even scientists are puzzled by these streaks, which soak up ultraviolet radiation.
14:14It's like Venus has some secret party tricks up its sleeve.
14:17And speaking of parties, the planet is packed with active volcanoes,
14:21and they're always putting on quite a show.
14:23Molten lava flows and fiery eruptions are our daily dose of entertainment.
14:27Venus is similar in size to Earth, so the landscape feels familiar, but with a twist.
14:33It has a crazy amount of pressure that would make even the toughest creatures on Earth squirm.
14:37But not us.
14:38Our bodies are built to handle it,
14:40and we confidently strut around Venus like it's no big deal.
14:44Our cities shine like beacons, built with materials that can handle the intense heat and pressure.
14:49The metallic structures reflect the fiery glow of the Venusian sun.
14:52Inside, we've got super-advanced cooling systems that keep us comfy despite the scorching temperatures.
14:58We surf on streams of molten lava, safely of course, and explore the volcanic landscapes.
15:04Pretty exciting, isn't it?
15:06But still, how about moving to a more friendly environment?
15:10Like Mars.
15:11Moving to Mars is one of our biggest goals.
15:13Its surface is a colorful canvas with hues of brown, gold, and tan.
15:17It's covered in rusting iron, regolith, which is like Martian soil, and dust.
15:22We would also be surrounded by volcanoes, impact craters, crustal movement, and mighty dust storms.
15:28As we gaze into the sky, we are greeted by Phobos and Deimos, Mars' moons.
15:33The sky itself is hazy and painted in shades of red, and becomes blue during the sunset, opposite to what
15:40we have on Earth.
15:41The temperatures on Mars can be quite extreme.
15:44Sometimes, it's as mild as a comfortable 70 degrees Fahrenheit, while at other times, it plunges to bone-chilling lows
15:50of around negative 225 degrees Fahrenheit.
15:53But once again, let's assume that our bodies have adapted to handle these swings.
15:58We've also developed ways to safeguard ourselves from meteorites and asteroids.
16:02These guys will be our frequent guests.
16:05The thin atmosphere of Mars doesn't provide much protection from them.
16:08Out of all the planets, Mars would be the easiest one for us to adapt to.
16:13Our next candidates, though, are not that hospitable.
16:18Living on Jupiter, the gas giant is a whole new level of adventure.
16:22Since there's no solid ground to walk on, we've come up with some super cool ways to call this place
16:26home.
16:27Picture floating cities like gigantic bubbles, suspended in swirling gases and liquids.
16:33They're specially designed to withstand extreme pressures and temperatures.
16:36To get around, we have jetpacks and hovercrafts.
16:40Imagine floating amidst Jupiter's majestic atmosphere, surrounded by cold, windy clouds of ammonia and water.
16:47These vibrant stripes and swirls paint the planet with a colorful palette.
16:52We zip through the colorful clouds, enjoying a mesmerizing kaleidoscope.
16:56Our homes and cities are filled with vibrant colors and shimmering lights.
17:00We've even created artificial gravity zones, where we can experience a semblance of gravity and walk with a bounce in
17:07our step.
17:08But be careful. Jupiter's powerful storms can be intense.
17:12Luckily, we have advanced weather prediction technology that keeps us safe.
17:15We watch the mesmerizing light shows of lightning dancing across the sky, marveling at the raw power of nature.
17:22All this sounds pretty fun, doesn't it?
17:24Well, what about the next gas giant, Saturn?
17:29Once again, we can live in the skies of Saturn, right among its beautiful rings.
17:33Our cities are like big colorful balloons that sparkle and shine with bright lights.
17:38Inside, we have large domes where we can freely enjoy everything this incredible planet has to offer.
17:44Instead of walking, we use special devices that make us glide through the air, just like on Jupiter.
17:49In this extraordinary place, we had to discover new ways to generate power.
17:54We use the energy from Saturn's powerful storms.
17:57These sources of energy help us fuel our floating cities, giving us the electricity and resources we need to thrive.
18:04Saturn has many moons, and each one has its own special features.
18:07We've set up outposts on some of these moons, where we can go on exciting adventures and explore their mysterious
18:13landscapes.
18:14But if living on a gas giant wasn't challenging enough, we also have ice giants in our system.
18:23Welcome to the fascinating world of Uranus.
18:26Despite the super chilly temperature of negative 353 degrees Fahrenheit, we've come up with clever ways to make this place
18:33livable.
18:33To create warmth, we can learn from Earth's greenhouse effect.
18:37Like a cozy blanket, we can introduce special gases into Uranus's atmosphere that trap heat.
18:43Another idea is to build gigantic mirrors to capture and reflect the sun's heat.
18:48But let's be honest, it would be quite a challenge to position all those massive mirrors just right.
18:53Our homes are designed to withstand extreme conditions.
18:57We use dense fluids like methane, ammonia, and water to build structures that keep us warm and cozy.
19:03Our habitats provide shelter from the freezing temperatures outside.
19:07We may even discover new forms of life that have adapted to the unique conditions of this icy giant.
19:13Now that would be chilling for sure.
19:23Neptune's atmosphere is mostly composed of hydrogen, helium, and methane.
19:27There's also no water, only lots and lots of ice.
19:30But that's fine with us, right?
19:32So it's time to construct habitats.
19:35Let's envision another sky city.
19:37After all, who doesn't love the idea of floating cities amidst the clouds?
19:40Imagine gazing out from your sky city, observing the mesmerizing hues and swirling storms of this ice giant.
19:48The vibrant colors of the atmosphere would paint a breathtaking backdrop for our daily adventures.
19:54We'd explore the mysteries of Neptune's moons, delving into their icy landscapes and uncovering the secrets they hold.
20:01Hey, a world where humans don't need oxygen or water to survive doesn't sound that bad.
20:07We'd soar through the skies and roam vast landscapes.
20:11The only limits we would have would be the limits of our own imagination.
20:15So stay tuned for more captivating what-if scenarios.
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