Archive for October 1st, 2022

October 1st, 2022 - 11:41 pm § in Science

Close-up photo of asteroid

This is a photo of the asteroid hit by NASA’s “DART” mission on Monday, September 26, 2022, just before impact. The story (read it here) says the egg-shaped asteroid is 530 feet in diameter. (Wikipedia says 560 feet, here.) My question is, in which direction, since it’s not r[...]

October 1st, 2022 - 11:06 pm § in Science

How it was proved the earth spins on an axis

Writer Erik Larson (profile here) described it as follows: “In 1627, a very brave if melodramatic German mathematician, Joseph Furtenbach, aimed a loaded cannon into the sky in preparation for an experiment he hoped would provide the first real-world test of another of Galileo’s theories[...]