Gravity and motion make time pass faster on Mars than Earth, reshaping navigation, communication, and future crewed missions.

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

Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

Amateur astronomer Tony Dunn must have been particularly impressed by the November crop of new asteroids to have put the 18 ...

Uncover the secrets of Comet 3I/ATLAS, the rare interstellar visitor of 2025. Learn its alien origins, ancient chemistry, and ...

Comet C/2025 K1 (ATLAS) has fragmented after its close solar approach, revealing insights into the fragility of long-period comets. New images show di ...

Astronomers recently detected a stray quasi-moon in our planet’s orbit, but it's hardly the first stowaway to hang out around Earth. Unlike the Earth's moon, quasi-moons are not gravitationally bound ...

NEW YORK (AP) — The moon will look slightly bigger andbrighter Wednesday night during the closest supermoon of the year. The moon’s orbit around the Earth isn’t a perfect circle, so it gets nearer and ...

November’s full supermoon peaks in illumination on Wednesday, November 5. It’s the closest full moon of the year in the moon’s orbit around Earth, meaning it’ll be slightly bigger and brighter than a ...

The most dramatic supermoon of the year is due to rise on Bonfire Night, providing a stunning backdrop to displays. Look up, and you might be lost for words from the size of this luminous Beaver. Full ...