Tagged: astronomy

Everything’s relative - Physics Stop

Marcus Wilson Oct 13, 2009

What does 'big' mean? How big does something have to be in order to reasonably carry that adjective? The answer, of course, is 'it depends'.For example, I am pretty tall. But after standing next to someone much taller than me on a tram last week, I realise that maybe I am not so tall after all. I got to see what it was … Read More

Who owns the moon? - Physics Stop

Marcus Wilson Oct 12, 2009

What gives NASA the right to hurl projectiles at 1.5 miles per second into the surface of the moon? Interesting, definitely. Useful, perhaps. Reasonable? I'm not so sure. Did this mission go through some kind of ethics approval?  … Read More