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Hole in black
What is a Black Hole
A black hole is formed when a star of sufficient mass (at least 3 time the size of our sun) undergoes gravitational collapse, with most or all of its mass compressed into a sufficiently small area of space, causing infinite spacetime curvature at that point (a "singularity"). Such a massive spacetime curvature allows nothing, not even light, to escape from the "event horizon," or border.
Stars are powered by nuclear fuel; most stars use hydrogen. The larger a star is, the faster it will use up its fuel, and thus, the sooner it "dies". If the stars are large enough, however, then the gravitational pull will crush the star to 'zero volume', or in the Schwarzschild radius. This forms a black hole The closest known black hole to Earth is Cygnus X-1, which is located about 8000 light years away.
What would happen to our Solar System if the Sun were to suddenly become a black hole?
Not much! Other than getting very dark and very cold, nothing else would change. The planets would not be sucked into the black hole. Their orbits would not change since the mass of the Sun has not changed. Only the space the Sun occupies has changed. The gravity of a black hole is very powerful only when you are very close to it.
Why are black holes black?
In order for a rocket to leave the surface of Earth, it must travel faster than 25,000 miles per hour (7 miles per second). This is called escape velocity. If the rocket has a speed less than the escape velocity of an object, the object's gravity will pull it back down. The escape velocity of a black hole is greater then 186,000 miles per second. That means a rocket would have to travel faster than 186,000 miles per second in order to leave the black hole. The speed of light is 186,000 miles per second, so light doesn't travel fast enough to leave the black hole, hence it is black. If you get close enough to a black hole you will see the back of your own head! This effect is called an Einstein ring, this is caused by the intense gravity around a black hole. When you are near a black hole at certain distances the light that leaves from the back of your head will travel though space that is bent so much by gravity that it will enter your eyes.
- What would happen to an astronaut if he tripped and fell into a black hole?
The astronaut would be stretched like a piece of spaghetti! The closer he got to the black hole, the stronger the force of gravity would be. In fact, the pull of gravity increases so fast, that the gravity tugs on his feet more than on his shoulders. With his feet being pulled into the black hole faster than his shoulders, he would be stretched out farther and farther, like a piece of spaghetti.
source: http://www.weirdfacts.com/solar-system-facts/black-holes.html
Until now, though this theories and facts are scattered the net. I still wonder if all questions and the answers above are true what will happen next?
mind feed? still asking for more.
Labels: EVENT, Planets, something to know
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The Little Princess
HI I'm soleil I dont really spend much time on this blog because of my busy schedule at work and when I have free time I spend it with my kids. but as much as possible I want squeeze in my time to write on my page. hope you enjoy dropping by ! :)
Hole in black
What is a Black Hole
A black hole is formed when a star of sufficient mass (at least 3 time the size of our sun) undergoes gravitational collapse, with most or all of its mass compressed into a sufficiently small area of space, causing infinite spacetime curvature at that point (a "singularity"). Such a massive spacetime curvature allows nothing, not even light, to escape from the "event horizon," or border.
Stars are powered by nuclear fuel; most stars use hydrogen. The larger a star is, the faster it will use up its fuel, and thus, the sooner it "dies". If the stars are large enough, however, then the gravitational pull will crush the star to 'zero volume', or in the Schwarzschild radius. This forms a black hole
The closest known black hole to Earth is Cygnus X-1, which is located about 8000 light years away.
What would happen to our Solar System if the Sun were to suddenly become a black hole?
Not much! Other than getting very dark and very cold, nothing else would change. The planets would not be sucked into the black hole. Their orbits would not change since the mass of the Sun has not changed. Only the space the Sun occupies has changed. The gravity of a black hole is very powerful only when you are very close to it.
Why are black holes black?
In order for a rocket to leave the surface of Earth, it must travel faster than 25,000 miles per hour (7 miles per second). This is called escape velocity. If the rocket has a speed less than the escape velocity of an object, the object's gravity will pull it back down. The escape velocity of a black hole is greater then 186,000 miles per second. That means a rocket would have to travel faster than 186,000 miles per second in order to leave the black hole. The speed of light is 186,000 miles per second, so light doesn't travel fast enough to leave the black hole, hence it is black.
If you get close enough to a black hole you will see the back of your own head! This effect is called an Einstein ring, this is caused by the intense gravity around a black hole. When you are near a black hole at certain distances the light that leaves from the back of your head will travel though space that is bent so much by gravity that it will enter your eyes.
- What would happen to an astronaut if he tripped and fell into a black hole?
The astronaut would be stretched like a piece of spaghetti! The closer he got to the black hole, the stronger the force of gravity would be. In fact, the pull of gravity increases so fast, that the gravity tugs on his feet more than on his shoulders. With his feet being pulled into the black hole faster than his shoulders, he would be stretched out farther and farther, like a piece of spaghetti.
source: http://www.weirdfacts.com/solar-system-facts/black-holes.html
Until now, though this theories and facts are scattered the net. I still wonder if all questions and the answers above are true what will happen next?
mind feed?
still asking for more.
Labels: EVENT, Planets, something to know
OLD / NEW