The month brings a spectacular lineup of celestial sights—including a rare chance to see Mercury without a telescope and a ...

The discovery of a new celestial object in the Earth's neighborhood has created a buzz online asking whether the planet now ...

The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.

No, NASA didn’t confirm a second moon, but scientists did discover something else that’s been traveling with Earth for ...

Tonight, October 23, 2025, stargazers are in for a rare treat as the waxing crescent moon lines up with Mars and Mercury just ...

The 6%-lit waxing crescent moon will be visible roughly 5 degrees above the horizon as the sun sets on Oct. 23, with Mercury ...

A viral claim says Earth has two moons — but does it really? Here’s what’s orbiting our planet and what Nevadans can actually ...

Quasi-moons are not real moons and don't actually orbit the Earth, although they sometimes appear to do so for short periods of time, Phil Nicholson, professor of astronomy at Cornell University, told ...

New laboratory research suggests that some organic molecules previously detected in plumes erupting from Saturn’s moon ...

The discovery of quasi-moon PN7 has caused a stir on social media. A University of Oregon astronomy professor explains. what ...

November's full moon will be the closest supermoon of 2025, set to shine for days. Here's when to watch and what to know ...

Skywatchers will witness a rare event as the Moon, Mars, and Mercury appear close together in the twilight sky this October.