Was the entire universe created by the Big Bang, or is the space/time generated by the Big Bang part of a larger universe? [more inside]
posted by Lownotes on Jun 23, 2009 - 23 answers

Help me explain why the Large Hadron Collider doesn't spell our doom. [more inside]
posted by Navelgazer on Sep 11, 2008 - 34 answers

I'm looking for a series of hardback science fiction anthologies I dimly remember from childhood (sometime in the mid 80s). I think it had a one word title with a number, and the series went up to at least number five. I remember two stories in particular... [more inside]
posted by Artw on Jan 13, 2008 - 11 answers

Can someone please explain to me in very basic terms the modern understanding of black holes and worm holes as a conceivable means of space/time travel? [more inside]
posted by np312 on Jul 25, 2006 - 10 answers