1. The human eye is so sensitive that, if the Earth were flat, you could spot a candle in the dark from 20 miles away The farthest object visible with the naked eye is the Andromeda galaxy,…
1. The human eye is so sensitive that, if the Earth were flat, you could spot a candle in the dark from 20 miles away The farthest object visible with the naked eye is the Andromeda galaxy,…