What happens when a comet collides with a gas giant? In July 1994, Shoemaker-Levy 9 slammed into Jupiter in a spectacular series of 21 explosions, creating fireballs bigger than Earth itself. This was ...

Sometimes a comet such as Shoemaker Levy 9 will go into orbit around Jupiter and act as a moon. Others leave Jupiter's orbit and go back around the sun. Comets are like cats; they both have tails ...

The Shoemaker-Levy 9 comet collision with Jupiter 30 years ago spurred interest in planetary defence, leading to missions like Ramses to prevent potential Earth impacts. Apophis, roughly 375 ...