Black Holes 101 | National Geographic


(mysterious music) – [Woman] Black holes are among the most fascinating
objects in our universe, and also the most mysterious. A black hole is a region in space where the force of gravity is so strong, not even light, the fastest known entity in our universe, can escape. The boundary of a black hole
is called the event horizon, a point of no return, beyond
which we truly cannot see. When something crosses the event horizon, it collapses into the
black hole’s singularity, an infinitely small,
infinitely dense point where space, time, and the laws
of physics no longer apply. Scientists have theorized
several different types of black holes, with stellar
and supermassive black holes being the most common. Stellar black holes
form when massive stars die and collapse. They’re roughly 10 to 20
times the mass of our sun, and scattered throughout the universe. There could be millions of
these stellar black holes in the Milky Way alone. Supermassive black holes
are giants by comparison, measuring millions,
even billions of times, more massive than our sun. Scientists can only guess how they form, but we do know they exist at the center of just about every large
galaxy, including our own. Sagittarius A, the supermassive black hole at the center of the Milky Way, has a mass of roughly four million suns, and has a diameter about the distance between the earth and our sun. Because black holes are invisible, the only way for scientists to detect and study them is to observe their effect on nearby matter. This includes accretion disks, a disk of particles that
form when gases and dust fall toward a black hole, and quasars, jets of particles that blast out of supermassive black holes. Black holes remained largely
unknown until the 20th century. In 1916, using Einstein’s
general theory of relativity, a German physicist named
Karl Schwartzschild calculated that any mass
can become a black hole if it were compressed tightly enough. But it wasn’t until 1971
when theory became reality. Astronomers studying
the constellation Cygnus discovered the first black hole. An untold number of black holes are scattered throughout the universe, constantly warping space and time, altering entire galaxies,
and endlessly inspiring both scientists and our
collective imagination.

100 thoughts on “Black Holes 101 | National Geographic”

  1. A black hole is a region in space where the force of gravity is so strong, not even light can escape. What intrigues the most about these mysterious objects in our universe?

  2. I'm just curious, when we try to send a satellite to study or observe a black hole, will it survive? Or will it be destroyed by its immense gravitational force? And can we possibly develop a strong satellite to be able to withstand this immense gravitational force?

  3. Pierre-Simon marquis de Laplace is the first mathematician to postulate the existence of black holes and the notion of gravitational collapse.

    The first modern solution of general relativity that would characterize a black hole was found by Karl Schwarzschild in 1916.

    Fred Lo was close enough to announcing that the Milky Way contained a black hole in 1971.

  4. Yes's what I found right now There is no god in the world That is just human imagination….. Who is believe this 😎

  5. Got myself thinking whether a black hole, infinitely compressing all matter that enters it, has an exit somewhere where deconstructed matter is emitted back into deep space as molecular particles, slowly collecting back together and recycling the universe.

  6. I’m here after seeing the first black hole’s captured image and still don’t know what it really is!

  7. So basically black hole is like a very bag or bag like thing which will one day get filled but nobody knows when .

  8. Black holes I guess are the origin of all galaxies in the universe. That's the early stage of the formation of galaxies.

  9. BLACKHOLE ARE CAME FROM THE BIRTH OF QUASAR AND THAT IS A GIANT TRANFARRENT GRAVITY NOT A MATTER THE PLANET ARE CAME FROM THE BIRTH OF THE SUN CALLED SMALL BLACKHOLE ALSO LIFE ARE CAME FROM THE GRAVITY INSIDE THE PLANET CALLED TINY GRAVITY

  10. Mas maganda kung gagawa nalang sila ng anumang gadget na makakaya nila at itatapun doon sa blackhole, kung anutalaga ang meron sa loob nang blackhole. Pag papasuk doon ang inbento nila tiyakapa bubuksan yong gadget namay miron camer, at doon na nila makikita kung anung miron sa loob nang blackhole. Ang dami naman nagagawa dito sa mundo ng earth ng mga gadget na nagawa. Pursige lang yan para makita yung katutuhanan kung anung miron talaga sa loob ng blackhole

  11. Why quasar come out from black hole.. Even nothing will come out from black hole?? What's the reason????

  12. My stomach (and mouth) is a fricking black hole that it eats all food that I see everywhere

  13. Different dimensions may be co existing with out intracting each other and somehow matter and energy leked to our dimension as big bang expansion. Chance is that our expanding universe is just a return of that matter and energy back to that dimension.( Imagination only)

  14. Can take pictures so far (Black Holes) …

    But the pictures of Mars or other planets can not look better

    Is this true at all?

  15. These are very interesting. people can get knowledge form these. I like to know about these things thanks for the video.

  16. Its all fake and the black hole picture bc the real black hole picture came out after this and that’s not it your just tryna get credit but really you lied and it won’t get the sun or earth it’s far away

  17. The illustrations are not decently accurate. Why not ask the animators for revision? Or does NatGeo not has astronomer to ask advice from?

  18. You said that star dies it will create black hole. The question is what about the big bang theory when it exploded there's a black hole? If there's a black hole it may be the largest? I think black hole is older than big bang look at the universe its completely dark when the star collapse and the most important how that star created if the particles are form when after it collapse? I am Filipino and so curios how universe started

  19. Black hole αžœαžΆαž‡αžΆαž…αžΆαž”αŸ‹αž•αŸ’αžαŸαžΈαž˜αž“αŸƒαž€αžΆαžšαž€αž€αŸαžΈαž αž“αŸƒαž—αž– αžŠαžΌαž…αž€αžΆαžšαž€αž€αŸαžΈαžαž“αŸƒ αž‡αžΈαžœαž·αžαž˜αž“αž»αžŸαŸ’αžŸαž€αŸ’αž“αž»αž„αž–αŸ„αŸ‡ αž˜αž·αž“αžαž»αžŸαž‚αŸ’αž“αžΆαž‘αŸαžΈαž™

  20. 唉!ζ²’ε­Έζ­·ζ²’ηŸ₯θ­˜ηš„ζˆ‘'ηœ‹δΈζ‡‚ζ‚¨θ²Όζ–‡ηš„ζ„ζ€εͺε₯½ι»―η„Άι€€ε‡Ίθ‡‰ζ›Έε°ζ‚¨ηš„θΏ½θΈͺ!SORRY!

  21. My Personal thinking and research about Black-hole .
    @ Actually Black hole is a Recycle Bin of the universe system @

  22. πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚πŸ€©πŸ€©πŸ€©πŸ€©πŸ€©πŸ’™πŸ’™πŸ’™πŸ’œπŸ’œπŸ’œπŸ’œπŸ™πŸΌπŸ™πŸΌπŸ™πŸΌπŸ™πŸΌπŸ™πŸΌπŸ™‹πŸ™‹πŸ™‹πŸ™‹

  23. It is an hole in space and time where no theory is possible ……

    You sad that by comprising mattter hardly we can make a black hole but i have studied that if we compress a matter and compress then there will be a time we can't compress it

  24. Schwarzschild is pronounced like Shvarts-shilt (IPA: ΛˆΚƒvaʁts ΚƒΙͺlt). Like most other Jewish German surnames, it's actually really cool; it means Black Shield.

  25. BLACK HOLE IS NOT A HOLE OR BLACK THIS ARE TRANSFARENT GRAVITY WHOLE BECAUSE SUROUNDED OF DUST BLACK BECAUSE THE OTHER SIDE ARE THE SPACE, THE PROOF OR HOW TO FOUND ARE THE RAINBOW SURROUNDED OF MOISTURE THATS WHY HAVE A COLOR

  26. Black holes gravity is very strong there for our galaxy and planets are whenever close distance then black hole attracted sun planet but my mind was really complex question
    1 what is the black hole real photo

  27. Where do the things or objects go after being absorbed by black hole?? That's a mysterious one. Do they go to the bottom of the black hole??????????????????????????????????????????????????????????????

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