when was uranus discovered
This date in science: Uranus discovered, completely by accident. Planet Uranus via Voyager 2 in 1986. William Herschel noticed while surveying stars that one object moved apart from the star background. It was the first planet discovered since ancient times. March 13, 1781. The 7th planet â Uranus â was discovered on this date, completely by accident. British astronomer William Herschel was performing a survey of all the stars that were of magnitude 8 â in other words, too faint to see with the eye â or brighter.