... why does it take millions of years to fill the galaxy with
sentient life...
jlm
The galaxy is one hundred thousand light years across. At 1% light
speed, i.e., 3000 km/sec or 1860 miles per second, that is ten million
years. At one-tenth that, i.e., at 0.1% light speed that is
one-hundred million years.
We humans have a hard time going at 30 km/sec (19 miles per second) or
0.001% light speed. At 0.001% light speed, that takes ten billion
years to cross the galaxy.
Robert J. Chassell
i see, now, the rule limiting interstellar travel, but what is the
effect of acceleration as velocity increase and possibly approximates
the speed of light?
if there is advanced forms of life on one planet, then it seems
reasonable to assume that intelligent life could have evolved elsewhere
in the galaxy, and colonize near by planets. under that scenario we
should have observed the signature of some of those civilizations by
now, especially those from stars much older than our own. perhaps the
singularity only exists for a short window before transcending? could
this be the explanation why we have never been able to verify the
existence of extra terrestrial life? is this the reason you say humans
will be extinct?
jlm
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