Astronomers say a distant, sunlike star shows signs of a catastrophic planet-on-planet crash that may mirror the ancient impact that formed Earth's moon.

Earth’s gravity has a lot to do with what people think is up and what is down. Things fall down toward the ground, but that ...

The orbits of a seven-planet system discovered in Kepler Space Telescope data has been sonified. Credit: Bishop’s University ...

So, it came as a shock to many people when, in 1781, it was announced that a seventh planet, the first to be discovered since ...

NASA's DART mission didn’t just change the orbit of Dimorphos, the asteroid it hit. It changed the orbit of the larger ...

An oddly-behaving star led two UW astronomers to capture rare evidence of a collision between two planets in a distant solar ...

The NASA DART spacecraft shifted the orbits of two asteroids around the sun after intentionally crashing into one of them.

Asteroids are some of the oldest objects in the solar system: leftovers from the chaotic time when planets were assembling ...

A new study has found that an asteroid NASA used for target practice a few years ago was nudged into a slightly different ...

New observations have ruled out the chances of an asteroid hitting the moon in 2032, according to scientists using the James Webb Space Telescope.