Over six days in July of 1994, 21 fragments of a comet named Shoemaker-Levy 9 crashed one after another into the atmosphere of Jupiter as telescopes across the world watched — the first time in recorded history that human beings had ever directly observe - Space Daily
Source:Space Daily
The first time human beings ever watched two objects hit each other in space was in July 1994, and the observation happened almost by accident because a husband-and-wife astrogeologist team and their Canadian friend had gone to look at Jupiter with a telescop…