A few questions--Answer what you know:?

Question

1. What is a black hole. 2. Have any astronauts ever been through a black hole, or have any been lost somewhere in space where no one knows and nver returned back to our planet? 3. What happens when you exit the space craft but you're not on a planet? Are you on air? Space? What is space? Do you float? Do you fall? What do you happenings to yours?

Answer 1

When a massive star dies it explodes in a supernova leaving behind a heavy core made up of iron and other extremely heavy elements. Basically the gravity is so great that the core starts collapsing in to itself because even the neutrons in the atoms can't hold up against the pressure. What happens from here is a huge mystery and baffles scientists and any one with an imagination.
No astronauts have ever been through a black hole. But we do have evidence of black holes. Look up Cygnus X-1. There is a star that orbits a black hole and the only way we know the black hole is there is because we can see the star being stripped of it's gases by an invisible object. This object emits huge amounts of x-rays which are given off when matter heats up to millions of degrees.
When you exit a space craft you will freeze almost immediately. Takes about 1 second to freeze completely in outerspace....and since it sounds like you are young I won't get in to the details of temperature in outerspace. The only way you can fall in space is if you are close to a large object such as a planet or star. Gravity is what causes people to fall and if you are far away enough from everything in space you will float there. I hope this helps buddy. Have fun!

Answer 2

A black hole is a huge amount of mass compressed into what is called a singularity. A singularity has no dimensions, it is not 3d nor 2d, it is just a single point. The huge amount of mass creates a massive amount of gravity that makes this possible. This massive amount of gravity allows a black hole to bend and suck in even light, hence the term.

No astronauts have ever been lost to space and not returned. The nearest black hole is far too far away for us to visit, nor would we want to. Doing so would kill you from the sheer amount of gravity- the same would happen visiting a massive planet or getting too close to the sun.

If you're not on a planet you're most likely in space. Space is more or less an absence of things (although technically there is the occasional atom floating around, as well as radiation and light from stars and such). Depending on your distance from planets and stars, you'll most likely feel weightless due to the lack of gravity, so technically you'll float in nothingness, as nothing is pulling you anywhere. Without anything to stand on or fall through, even if you were falling you wouldn't realise you were, other than the fact you're getting close to the thing pulling you.

Answer 3

1. An object htat is so small and dense that it's gravity is so strong nothing can escape it.
2. No. No astronauts have ever even gotten close to a black hole.
3. If you're wearing a space suit, you're ok. If not, you die of suffocation in a few minutes. Space is emptiness- nothing. You do not fall. You do not move unless something pushes on you. If this happens, you will continue to move until something else pushes in the oppostie direction to stop you- there is no air to slow you down.

Answer 4

1. A very VERY massive star that has collapsed due to its immense gravity - its black because even light isn't moving fast enough to escape its gravity. There is a LOT of detail that I won't go into - but there are all kinds of books on the subject.

2. No.

3. In space there is no air, no up or down, no gravity. So you just float (or keep moving in a straight line if you were moving when you left the ship). There is nowhere to fall.
Not sure what you mean by "what do you happenings to yours". If you are left out in space, you eventually run out of oxygen in your suit and you suffocate. If you aren't in a space suit, then you suffocate almost immediately (no air in space remember) and then if you are out of direct sunlight your body freezes, if you're in direct sunlight the water in your body will boil and escape from the pores and other openings - you'd end up as a mummy in space.

Answer 5

A black hole is a star that has died and collapses into itself to the point that it has such tremendoud gravity that not even light can escape.2. No.3. you "float" you are in a vacume.