What, or when, would aliens see, if they looked at the earth?
Answers to Physics Questions
Physics, cosmology, astrophysics, electricity, energy, forces, gravity, light and maths...
22 June 2008
As lightning can strike in the same place twice if you get struck by lightning and it stops your heart and then you get...
01 June 2008
Why does the road surface appear to shimmer when it’s hot?
01 June 2008
How does a didgeridoo do what it does do?
11 May 2008
Why do ear plugs amplify internal noises?