Qu’y a-t-il de l’autre côté d’un trou noir ? C’est l’un des plus grands mystères en science spatiale ! Les trous noirs sont des puits de gravité super puissants, donc une fois que quelque chose dépasse l’"horizon des événements" (leur point de non-retour), il est attiré et ne peut pas s’échapper — même pas la lumière. Les scientifiques pensent que la matière à l’intérieur d’un trou noir pourrait être compressée en un point minuscule et dense appelé une "singularité." Certaines théories suggèrent qu’il pourrait y avoir un "trou blanc" de l’autre côté qui recrache ce que les trous noirs absorbent, ou même un trou de ver qui mène à une autre partie de l’univers. Mais comme rien ne peut s’échapper d’un trou noir, nous ne pouvons pas vraiment y jeter un coup d’œil. Animation créée par Sympa. ---------------------------------------------------------------------------------------- Musique par Epidemic Sound https://www.epidemicsound.com Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna ---------------------------------------------------------------------------------------- Nos réseaux sociaux : Facebook: https://www.facebook.com/sympasympacom/ Instagram: https://www.instagram.com/sympa.officiel/ Stock de fichiers (photos, vidéos et autres): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ---------------------------------------------------------------------------------------- Si tu en veux encore plus, fais un tour ici: http://sympa-sympa.com
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00:00Black hole, an enigma that has intrigued scientists and captivated our imagination for decades.
00:07But what is inside a black hole? Is it a void? A bottomless pit? A parallel universe?
00:14We do not know for sure yet, but scientists may have some ideas.
00:19Let's listen to them.
00:22Imagine this. In the vastness of space, there is a supermassive star, shining intensely like a diamond.
00:29But like all good things, the celebration of this star cannot last forever.
00:34In the end, it runs out of fuel and disappears in an explosion.
00:38Literally. The star collapses under its own gravity, creating an implosion.
00:45Now, this collapse is so intense that it creates a bottomless pit in space, like a landslide.
00:52This is what we call a black hole.
00:55It is the ultimate escape, absorbing everything in its vicinity, including light.
01:02Imagine yourself approaching a black hole.
01:06The black hole itself does not emit any light.
01:09But you can notice a dazzling spectacle of cosmic fireworks surrounding it.
01:14The accretion disk.
01:16It is like a celestial carousel of gas and dust swirling in a dizzying dance around the black hole.
01:22The incredible gravitational forces attract all this matter from their environment, creating this celestial furnace.
01:31Of course, it is very unlikely that you have survived in this place.
01:36The temperatures here reach millions of degrees.
01:39In addition, there are constantly dazzling X-rays and high-energy radiations that can be detected by telescopes on Earth.
01:48But let's imagine that you have survived, in one way or another.
01:52As you get closer, you notice a mysterious border forming in front of you, the horizon of events.
01:59It is a point of no return, beyond which the laws of physics seem to become uncontrollable.
02:04Now, you are stuck in a space jam.
02:07And no matter how hard you press the accelerator, you go nowhere.
02:11Once you cross this threshold, even the light cannot escape.
02:17And now, you inevitably fall into a black hole.
02:21What do you see around you?
02:25According to the physicist of genius Albert Einstein, space and time are not separate entities, but rather intertwined in a pattern called spacetime.
02:35It's like a cosmic trampoline that can stretch and bend if you put something heavy in it.
02:41And black holes are ultra-heavy.
02:44That's why they deform this trampoline in the most extreme way possible.
02:50So, when you venture near a black hole, you live an intense experience.
02:56The curvature of spacetime becomes so intense that it looks like a whirlwind absorbing everything, even the light itself.
03:03Everything around you looks like a house of space parties with deformed colors and rays of light that keep changing.
03:10All this gives you the impression of doing the moonwalk on a treadmill.
03:16In addition, the curvature of spacetime around a black hole is so extreme that it creates a phenomenon called time dilation.
03:24Time near a black hole advances at a different rate than that of the rest of the universe.
03:29The closer you get to the black hole, the slower time flows, like a slowdown.
03:37And the deeper you fall, the stranger things get.
03:41The laws of physics seem to disintegrate before your eyes.
03:44But let's suppose you have managed to survive all this madness.
03:48Where exactly do you fall?
03:50What awaits you on the other side?
03:52Is there even another side?
03:57As you venture deeper into this celestial maelstrom, you reach an unspeakable and mysterious point called singularity.
04:06It is the heart of a black hole.
04:08A place where all matter and energy are crushed into a single point of an unimaginable density.
04:15Imagine compressing the mass of entire stars into something that is essentially a needle point.
04:23And now that you are there, forget the usual rules of physics.
04:27Welcome to a new kingdom, where the known collapses and the unknown takes over.
04:34So, what does this unknown look like?
04:37Well, there are a few theories.
04:42First of all, it could be a gateway to other dimensions.
04:46And if there were multiple hidden universes inside the black holes, like Russian dolls,
04:51according to this theory, the interior of a black hole could be a portal to a parallel universe with its own set of laws of physics and possibilities.
05:00This parallel universe could be radically different from our own world.
05:05What a breathtaking idea!
05:09Or what about glass holes?
05:11Imagine black holes forming a space subway system,
05:15connecting different regions of space and time together.
05:19These theories suggest that the extreme gravitational attraction of a black hole could create a glass hole.
05:26A tunnel that could take you to another galaxy, or even into the past or the future.
05:31It's like finding a secret passage in a video game.
05:38That's not all.
05:39Some scientists suggest that inside a black hole, we could find exotic matter.
05:44A strange matter with bizarre properties, or a negative energy density.
05:50If this were the case, it would challenge our understanding of the universe.
05:56And finally, one of the most confusing theories is that a black hole could actually lead to a white hole.
06:06Imagine, as you fall further, you suddenly find yourself in a space show of blinding brightness.
06:13You are in a white hole.
06:15It is a fountain that projects matter, energy and information into the universe with care.
06:22The cradle of new universes.
06:26You see, while black holes are known for their horizon of events,
06:30white holes have an anti-horizon of events.
06:33With black holes, everything can enter and nothing can leave.
06:37With white holes, it's the opposite.
06:39They repel everything.
06:43White holes are hypothetical objects.
06:46Their existence has not yet been proven.
06:48But if it turns out that they exist, they could be connected to black holes.
06:53It makes sense.
06:54Black holes suck up everything.
06:56And white holes should take their matter somewhere.
07:01And all this matter and energy coming out of the white hole could potentially form new universes.
07:07With black holes, they could form a universal cycle of creation.
07:12The end of a universe leads to the birth of another.
07:18All these theories are beautiful and fascinating.
07:21But here is the hiccup.
07:22There is still no concrete proof of any of them.
07:28Black holes remain one of the greatest mysteries of our world.
07:32Unfortunately, studying these mysterious beasts is not easy.
07:37They are extremely unnoticeable.
07:39And this is one of the greatest challenges for scientists.
07:42Black holes do not emit light.
07:44So they cannot be seen directly.
07:47They are essentially invisible to telescopes that depend on light,
07:51which makes them incredibly difficult to observe.
07:54This is why scientists must rely on elements such as X-ray emissions,
07:59the effects of the gravity of a black hole on neighboring objects, and other clues.
08:04They are also very unpredictable.
08:06For black holes, physics is like a fun playground.
08:10They distort space and time around them,
08:13which makes it difficult to predict and understand their behavior.
08:18But don't worry, space enthusiasts.
08:21The future of research in this field is as promising as ever.
08:25We have already made incredible discoveries.
08:28For example, in 2019, we captured the very first direct image of a black hole.
08:34This is the central black hole of the galaxy Messier 87.
08:38A few years later, we also took a picture of a black hole in the center of our own galaxy,
08:44the Milky Way.
08:45This one is called Sagittarius A.*.
08:48All this has opened new ways for research.
08:52And these are not the only interesting things we have discovered in recent years.
08:57Let's take gravitational waves, for example.
09:00Do you know how rocks leave undulations after falling into the water?
09:04Well, gravitational waves are undulations in space-time.
09:09They carry clues about the most cataclysmic events in the universe.
09:14They have allowed us to listen to the universe,
09:17revealing phenomena and previously hidden events.
09:20And all these observations give us a new way to study black holes.
09:25We are constantly making new technological advances.
09:29The James Webb Space Telescope will provide us with even more detailed observations
09:35and insights into the mysteries of black holes.
09:40There are still so many things we don't know.
09:43But it is the beauty of science, the thrill of the unknown
09:47and the curiosity that drives us to explore the mysteries of the universe.
09:51So, let's keep diving into the cosmic abyss,
09:55in this exciting quest to reveal the secrets of our world.