What are black holes?

Answer 1

Science fiction, mostly. They exist, but you cannot use them for anything except to get crushed. Sorry, there is only one universe, and time travel is only possible in the forward direction. Every second, you travel one second into the future.

Answer 2

Most of this is copied directly from another question I answered earlier in the day:

To be succinct, a black hole is a point, otherwise called a singularity, that warps the "geometry" of space-time so much that once matter crosses the event horizon (the point of no return) that no matter or energy (light) except Hawking radition escapes.

To get a black hole, you need a particularly large star (many, many times larger than our sun) to explode (go supernova) and then collapse back in on itself. When it collapses back in on itself, it becomes singularity (a region of massive gravity created from a lot of mass crammed into a small space). The singularity's mass and gravity are so great that it warps space-time into a funnel-like form leading into the singularity. Before you fall into the singularity, you'll encounter the event horizon which is where black hole physics (which are nothing like the physics that is normal to the rest of space) and normal physics meet. Once you cross the event horizon into black hole territory, it's no return for you.

White holes, what some believe happens on the other "side" of a singularity, are theoretically where all the crap that falls into a black hole goes; possibly into a parallel universe. I believe that can be safely ruled out as possibility for one very specific reason; we don't observe white holes in our own universe.

Matter doesn't disappear, it's not destroyed (it can't be), it joins the other matter in the singularity, adding more mass and more gravity to the beast. There are some theories that suggest time travel, faster than light travel, or travel to alternate universes may be possible through joining to black holes together to form an Einstein-Rosen Bridge (wormhole). Behavior like this hasn't been observed yet, whether or not it happens is all theoretical right now. It's an interesting theory however.

There's a lot of places (take the wikipedia and the internet with a grain or several thousand of salt) to poke around if you're really interested. I do have to book recommendations if you like theoretical physics (black holes are nothing compared to M-theory/hyperdimensional physics), they are Hyperspace by Michio Kaku and The Elegant Universe by Brian Greene

Answer 3

Black holes are a buffer in space to preventt on galaxy being sucked or drawn into another galaxy that isof a different time and phase fielsd. Imagine a Large rubber ball suppended in the center of your bed room. The ball has radials of thinn wire coming out of it to a distance of say, seven feet. Now imagine at the the end ofthe wire there is an egg shell. The sheel is earths galaxcy while the yoke is the earth. Now imagine there is a string of these egg shells making a cicle about the rubber ball. At the head and base of the sheel we have a small buffer of spounge so that the egg can not crash into the one nect to it. The spounge is the black hole and is a buffer zone in space to keep our galaxy where it is as it expands anf grows through time along with the expanding universe. The rubber ball is the source of creation and where all spirit life eventualluy returns to. Earths die and new earths take there place. Look at our earth and then look at Jupitor. The avers earth life form is 6' and the size of the earth is masive. Well in years to come, what size lifes forms will be living on Jupitor, twoo hundred foot high people? We are just one small moment of life groth to the universe, like a three years old is to an eighty year old. Hope this has helped you

Answer 4

Black holes are a part of the universe where the gravity force is very strong, it is belived that the black holes are product of the colapse of a big start, the name of black hole cames after the fact that the light is "absorberd" by the area near the black hole

Answer 5

Black holes aren't vortexes, they're not even holes. They are super dense remnants of once massive stars, where the cores of these stars have been compressed into spheres a fraction of their original size. They still have the same gravity of the original star, but it's so concentrated that the light is pulled back down to the surface, so no light escapes means it appears black. We can't actually see black holes, but we know they're there because of what they do to the surrounding space. It's a bit like the wind.. you can't see it, but you see what it does.

Answer 6

Ifinitely small areas where matter and light goes after a star collapses to cause it. i think white holes are the opposite of black holes because matter can't just dissapear in black holes, it HAS to go somewhere else. It's a law of science.

Answer 7

A black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape .

Read more infos in the links

Answer 8

black hole can mean anythin , it can mean that a black hole from outer space , or as a sayin ur heart may be a black hole , or just a regular hole thats realy dark

Answer 9

a black hole is like a vortex that has so much power and has the gravity to pull in anything and crush it emmediatly......black holes r invisible...they r invisible becuse light cant even escape there path...

Answer 10

That's the question, is it an empty space, a vaccum? A passage way into an alternate universe? Maybe even a way to travel through time.

Answer 11

holes in the in space that go on and on