Consider for a moment, space. Things beyond Earth.
We refer to things that are 10,000 light years away as being close? To
travel at the speed of light is about 300,000 meters per second. What is
the magnitude of the state ment light year?
Man's closest, and perhaps only realistically attainable goal in space is
the moon. A lifeless void that has beaten and bombarded by everything in
the known universe. A dust ball that's only distinction is being the
closest in proximity of our own ball of haven.
Life is out there, but it will always be a philosophical discussion. For
until Haley's comet collides with the Earth in about 2,000 years no one's
going to care.
But think about that for just one second.
If we left tomorrow, in 2,000 years we would be about one-fifth of the way
to one of the 'close' stars. And that's also traveling at a speed that
mankind has never reached before. And there's no guarantee that we could
live wherever one of those 'close' stars are.
When the set of comets ran into Jupiter a year or two ago, the 'small
comets caused the equivelent force of approximately a 150 kiloton atomic
bomb. Hiroshima and Nagasaki were about 10 kilotons.