Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

Mercury may be the planetary scapegoat for just about anything that could go wrong, but the messenger planet is, ironically, misunderstood. By harnessing the power of the messenger planet, which ...

The robotic Tianwen-2 spacecraft will collect samples from Kamoʻoalewa, which some scientists suspect is a fragment of the moon.

People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the ...

There have never been so many satellites orbiting Earth as there are today, thanks in part to the launch of mega ...

A 2.5-kilogram chunk of metal found on a Canadian farm in August 2024 has become a symbol of a growing dilemma in space ...