Comet C/2023 P1, Nishimura visible from Earth. Credit: NASA/JPL-Caltech | edited by Space.com Trump signs executive orders on ...

The planet orbits its host star in just 30.5 hours, losing a mass of material roughly equal to Mount Everest each time ...

Astronomers have spotted a small rocky planet that orbits perilously close to its host star disintegrating as its surface is ...

A newly discovered comet, called C/2025 F2 (SWAN), may have disintegrated. But the remnants are still visible.

EarthSky has reported that recent observations suggest the comet completes one orbit around the sun every 2.1 million years. As comets approach the sun, our star’s heat causes them to release ...

The result is a trail of dust and debris along the trajectory of the comet’s orbit, like a line of chalk left in space. In the case of comets linked to meteor showers, the Earth passes close ...

NEW YORK (AP) — A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes of a naked-eye spectacle. Comet SWAN, hailing from the Oort ...

As comet Thatcher comes around the sun, the dust left behind spreads into a dusty trail around its orbit. As Earth passes through the dust trail, our atmosphere creates the fiery and colorful ...

Scientists from NASA’s Goddard Center for Astrobiology observed the comet C/2014 Q2–also called Lovejoy–and made simultaneous measurements of the output of H2O and HDO, a variant form of water.