I question the question. Perhaps the universe is open, hyperbolic and
infinite in extent. If so, then the search for the missing mass is like
trying to find caloric or measure the Earth's movement against the
aether.
>If there are other intelligent creatures, where are they?
Good question. Let's go find out!:)
See essay on space colonization at: http://freeradical.co.nz/
Daniel Ust