what is a "white hole" ? and a "black hole" in space?

Question

all i know, is that a black hole is a BIG empty space , that sucks everything into it, with ALOT of energy, so much that not even light can escape. help i want to know MORE!! and whats a white hole?

and how big is a black hole? and is it a hole, or a tunnel that leads somewhere else? or do scientists [or whoever studies this] have no idea.

i said "alot of enegy"

i meant alot of gravity.

Answer 1

Grammar note: "A lot" is two words, not one. Moving on...

A black hole is the result of an exploded star - some large stars, when they explode, suck a lot of themselves back into a point in space that is very, very, very small (called a singularity). A singularity creates a huge dent in space, what's called a gravity well (think of a bowling ball on a trampoline). Everything that passes by, even light, gets sucked into the gravity well. It's not that it's empty, it's that it's a thing in space that is very, very heavy and therfore has large amounts of gravity. As it sucks more stuff into it, it gets heavier, and therefore has more gravity, and heavier, and has more gravity, and so on.

A White Hole is a theoretical critter that, instead of sucking stuff up, blows stuff out. It repels, instead of attracts, matter.

Learn more about black holes and white holes below.

Answer 2

A black hole is a collapsed star that has (nearly) infinite mass in a relatively small space, possibly the size of a basketball to a small planet (see supermassive black holes). It is not a passage, it is a dead end, very dead. The gravity is so strong that even light cannot escape, and by current theory time itself becomes a singularity.

White holes are an analogeous (sp?) idea that states that someone falling into the black hole's event horizon would come out in a parallel universe. This is highly unlikely. More likely is that the traveler would be condensed into the singularity itself.

Answer 3

A black hole is not made of empty space; a black hole is made of matter that is very very dense. Matter is compressed to such a degree that the normal laws of physics do not apply. The center of the black hole, where the matter is concentrated is called a singularity. Because of the density and amount of matter in a black hole, after a certain distance not even light can escape its gravitational pull. At that distance is the event horizon of a black hole.

White holes are supposed to be the opposite of black holes, in a way. They are the time reversal of a black hole; matter is rejected or even ejected from a white hole. White holes are still conjecture, and might not exist freely, because they violate the second law of thermodynamics. If they exist, then they are part of a wormhole, if such a thing exists.

Answer 4

You are right. But according to Stephen Hawking...there are some mini black holes that can weigh billions of tons but are only the size of protons. Can u believe that? Worm holes are baby universes that connect with each other and if u get zapped into one you come outof another (acoording to Hawking).

I have no idea what a white hole is though.

Answer 5

scientists {A.K.A astronomers} have found that a black hole is a collapsed HUMONGOUS star that is invisible to man and it is usually bigger than the sun