Tagged: environment

the speed of light 10

Thursday Throughput: Io Edition

The Era of Classical Astronomy — from Galileo through Newton — was full of these kind of elegant experiments to measure the shape and size of the solar system, the distance to the nearest stars and the speed of light

environment

Ordinary World for 13 Oct 2018

Your Ordinary World links for Saturday 13 Oct 2018, with stories and perspectives on religion, economics, and two from the Ordinary Times vault. Read, Share, and discuss.