Answers to Space Science Questions

Answers to questions about space science, astronomy, rockets, planets, galaxies, stars...

25 May 2008

How rapidly does gravity propagate?

16 December 2007

Why is it that when you see pictures or photographs of stars they always appear as crosses?

16 December 2007

When I’ve been watching planets and stars in the night sky, why is it that the stars appear to be twinkling much more...

02 December 2007

Could an astronaut skydive from space? Would a spacesuit handle the re-entry heat?