Grainne
Music and book obsessed physics nerd, spreading the love of science to eager minds! :D
Untitled. A Gliese 581 Primer Gliese 581c is a planet recently discovered outside our Solar System.
What makes it so interesting is that it is by far the most Earth-like yet discovered. The key factor making it Earth-like is that it may harbour liquid water. It orbits within the Goldilocks Zone of its star, not too hot, like baked Mercury and not to cold like icy Mars, but right in the middle. Couple that with the fact that it is practically spitting distance away, makes it far and away the most interesting target for the search for life.
RELATIVITY CALCULATOR. Velocities in ordinary life which to us might seem incredibly fast have only a miniscule relativistic effect.
For example, orbital velocity (5 miles per second) produces a relativistic factor of change of only 1.000000000360219. Traveling at 93,141.1985 miles per second (half the speed of light) produces a factor of 1.1547005383792517. Here the velocity is incredibly fast and yet the change is still quite small. A time-ticking countdown of 1000 awesome things by Neil Pasricha.
Getting started.