This is easier to explain with math, than with
a demonstration. Space never ends in the same
way the surface of the earth never ends. It's
not that the surface of the earth is infinite, but
if you keep going far enough you end up in the
same place. The visible universe is huge, though,
and the whole universe is even bigger. So much so
that we will never reach the "edge" where you end
up where you started. If you could walk through
space in a perfectly straight line, in many
billions of years you would end up back at Earth.
So space "never ends," but it is finite, like the
surface of the earth.
Click Here to return to the search form.