For the first time ever, scientists have discovered evidence of two planets crashing into each other in a spectacular collision. These two distant exoplanets are thought to have been ice giants—like ...

Planet formation is thought to be a messy process, as lots of growing planets end up in unstable orbits, resulting in large collisions like the one that resulted in the Moon's formation. The messiness ...

the Earth you walk on today might not be the same planet that was born 4.5 billion years ago. Many scientists believe that in its infancy, Earth collided with another world the size of Mars, and that ...

A hot cosmic mess: Researchers have detected the afterglow of a cataclysmic event that resulted in the destruction of two ice giant planets. This collision was so intense that it caused a noticeable ...