The upper stage of a SpaceX rocket will crash into the Moon on Wednesday, an unintentional collision that poses no danger to Earth but will leave behind a lunar crater. A mixture of solar activity and…

"The debris plume should reach roughly 15 to 20 km in altitude for the ejecta..."

The rocket has been drifting in space for more than a year; When it strikes the moon on Wednesday it will carve out a crater and send up a plume of dust and rubble that scientists…

Abandoned spacecraft will hit with the force of three tons of TNT and leave behind a hole in the lunar surface

Astronomers' simulations predict what the lunar impact—and its aftermath—will look like