Starship Asterisk*

Accelerate a charge and you'll get electromagnetic radiation: light. But accelerate any mass and you'll get gravitational radiation Is it really as simple as that? I know very little about general relativity but, as I understand it, EM radiation is typically emitted mostly by dipoles but there are ...

I keep hoping for a powercut at night in the town where I live so I can climb the nearby hill and see how that affects the light pollution. Sadly, our electricity supply is very reliable!

But, what do YOU, think Bruce? Convincing evidence (a large number of stars very rapidly orbiting something that’s so dim we can’t see it) leads this Bruce to believe in the existence of the Milky Way’s central Super-Massive Black Hole... Hi, other Bruce. I think it's likely that there's something ...

Some people -- e.g. http://en.wikipedia.org/wiki/George_Chapline -- have suggested that black holes might not exist.