Cosmic Flash Memory
Sunday, September 27, 2009 - 19:07
in Astronomy & Space
Take a decently sized housecat. Let's say a cat that is well-fed and weights 7.5 kilograms. We can all comprehend such a mass. It's not too small, neither too big. A cat is something we can pick up and lift in earth's gravitational field. A cascade of powers of six-and-a-half billion read more