Why. Space ant time are linked. Since "space" started with the Big Bang, so did time. (Hey! all you cosmologists out there be kind, I know this is a really lame way of putting this :-))
Since the universe is expanding at nearly the speed of light, and since we do not have the technology to reach or exceed that speed, space is indeed the barrier.
In 1996, using the Hubble, a measurement of 68 to 78 km/sec/Mpc is what was indicated. Remember the speed of light in a vaccuum is 299,792,458 meters per second.
Why. Space ant time are linked. Since "space" started with the Big Bang, so did time. (Hey! all you cosmologists out there be kind, I know this is a really lame way of putting this :-))
I really don't care to discuss this again, especially on the same thread. Think about it. Ask yourself what the word "before" assumes.