Ask A Scientist Physics Archive

>Abdul,
>Gravity can escape the event horizon because it is gravity that holds
>everything in.  Gravity pulls on everything, giving everything, even light.
>But gravity is the weakest force in the universe.  In most cases, things are
>not affected much by gravity.  A black hole, however, exerts a very large
>gravitational force on the universe.  An average star can hold a slow-moving
>planet in orbit forever.  A black hole can hold objects traveling at the
>speed of light in orbit.  The event horizon is the distance at which the
>black hole can no longer pull hard enough to keep an object moving as fast
>as the speed of light.  It can keep slower things in orbit, but not light.
>As you go further out, the gravitational pull gets weaker and weaker.  A
>black hole is just a super-massive, super-strong star.  We cannot know for a
>fact what happens inside a black hole because we have know way to explore
>it.  It might be very similar to a solar system with even light being held
>in orbits.  It might be something very different.  Until we can find some
>way to measure inside a black hole, everything is just theories based on a
>few observations and the opinions of scientists.
>
>Dr. Ken Mellendorf>Physics Instructor>Illinois Central Colege
>    name         Abdl C.
>    status       othr
>    age          60s>    Question -   It is known that nothing can escape the event horizonof
> a black hole even light. How gravity can escape the event horizon and> affects the space surrounding the event horizon?
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