December’s full moon will reach peak brightness on Thursday, but it will look striking for the next few nights—especially ...

For the next half-century, Earth will have a new celestial companion. A small asteroid, officially designated 2025 PN7, has been confirmed as a quasi-satellite—a rare type of near-Earth object that ...

"During the early solar system's game of cosmic billiards, Earth was struck by a neighbor,” said Dauphas. “It was a lucky shot. Without the moon's steadying influence on our planet's tilt, the climate ...

The asteroid, known as 2022 RD2, belongs to a rare class of space rocks called Arjunas. These objects travel around the sun on orbits that closely match Earth’s and sometimes drift near the planet at ...

Did Earth once share the solar system with a secret neighbor? :globe_showing_Europe-Africa::new_moon: Scientists now believe ...

The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to ...

Hakuto-r captures a rare “terrestrial sunrise” during a total eclipse just before crashing into the Moon, revealing the ...

Dec. 4 full moon marks last supermoon of 2025. What we know about Cold Moon, including peak illumination and if it will be ...