How was it proved that gravitation was a function of mass? [more inside]
posted by Lorc on Jul 6, 2009 - 10 answers

What is the contradiction in the discussion of gravitational forces in the ... [more inside]
posted by woodblock100 on Jan 17, 2009 - 26 answers

Why is the Big Bang possible? [more inside]
posted by Bonzai on Feb 20, 2008 - 24 answers

Why do videogames with physics simulation always have things fall too slowly? [more inside]
posted by terpsichoria on Apr 25, 2006 - 16 answers

If General Relativity is accepted as true, why do Physicists talk about (and look for) Gravitons? [more inside]
posted by grahamwell on Mar 28, 2006 - 14 answers

ScientificIlliterateFilter: If the sun's gravity is so strong as to keep whole planets circling it in orbit (even ones million of miles away), how come light and heat (incredibly fragile things compared to planets) can escape as rays (or whatever they are)?
posted by amberglow on Nov 14, 2004 - 53 answers