#1
Posted: 12/21/12 at 3:28pm
A black hole is a star so massive that it collapsed under its own gravity. Astronomers enjoy repeating that not even light can escape from a black hole. Escape velocity on earth is 24,850 miles per hour. Nothing travels faster than light at 186,000 miles per second, and the escape velocity from a black hole exceeds even the speed of light. What goes in, stays in! Sort of like what happens in Vegas, stays in Vegas! A massive star's collapse is so drastic that only its gravitational field remains. With gravity this powerful, time slows down and ultimately stops. At the center of a black hole is a singularity. A singularity is a size-less point of infinite density. The collapsed star's mass disappears into the singularity as the black hole becomes a bottomless funnel.
Cygnus X-1 is a black hole. It is a source of X-rays in the constellation Cygnus. Astronomers found it when studying binary stars with an X-ray telescope launched in 1970. Black holes are believed to be at the centers of galaxies and may have been responsible for the formation of galaxies.
Stephen Hawking thinks there may be "wormholes" at the center of black holes leading to other universes.
Hawking http://www.hawking.org.uk/
Cygnus X-1 is a black hole. It is a source of X-rays in the constellation Cygnus. Astronomers found it when studying binary stars with an X-ray telescope launched in 1970. Black holes are believed to be at the centers of galaxies and may have been responsible for the formation of galaxies.
Stephen Hawking thinks there may be "wormholes" at the center of black holes leading to other universes.
Hawking http://www.hawking.org.uk/
