When the object now known as 3I/ATLAS was first spotted racing through the Solar System earlier this year, astronomers ...

Comet A6 Lemmon was last here in the early 600s and won't be back in the skies again until 3421, a once-in-a-lifetime ...

Dark matter makes up about 85 percent of all matter in the universe. It neither emits nor absorbs light, making it invisible ...

These synthetic supervillains have no concept of the value of human life and only seek to conquer and destroy.

The Methuselah Star, also known asHD 140283, has long been a subject of fascination among astronomers. Its age, initially ...

Gravitational Waves: Ripples in spacetime caused by massive objects moving, though these are incredibly hard to detect from distant binary black holes. Orbital Motion: Observing how the black holes ...

Gunstar One, through a series of unlikely events, became the 'Last Starfighter' to stand against the forces of Xur and the ...

My son is overseeing preparations at the National Cathedral in Washington, D.C., for the funeral of anthropologist Jane ...

Researchers have identified two theories explaining the mysterious gamma ray glow at the center of the Milky Way.

Comet Lemmon (C/2025 A6) makes its closest approach to Earth on Oct. 21, about 24 hours after the fainter Comet SWAN (C/2025 ...