But it isn't. It can't escape to space. The simple answer, of course, is that the earth isn't really that old. The Comet Mystery Comets, as they orbit the sun, are literally torn apart by gravitational forces, internal explosions, and solar winds. Short period comets can't exist for more than 10,000 years.
Most astronomers believe that comets originated at the same time as the solar system.
That limits the age of the solar system to about 10,000 years. As mentioned at the beginning, the issue is particularly important, as if the solar system is less than 10,000 years old there is not enough time for man to have evolved from a lower form. Html by Dr. Paul Prabhakar . Redistribute freely with this link intact.