On Friday, an object that formed outside of our galaxy passes close enough to Earth that we have a chance to see it in the night sky. It’s taken the astronomy community by storm. What is Comet ...

Comet 3I/ATLAS, the third interstellar object ever detected, reached its closest point to Earth overnight from Thursday to Friday (Dec. 18 to 19), and it remains in a good viewing position tonight.

Before the year winds down and the gifts are wrapped, take a moment to unwrap the night sky. The final days of December bring ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Katy ...

Comet 3I/ATLAS was discovered on July 1, 2025, by the NASA-funded ATLAS telescope in Rio Hurtado, Chile and was quickly ...

Dec. 19 (UPI) -- Comet 3I/ATLAS passed its nearest point to Earth early Friday and approaching within 168 million miles.

Discover the secrets of 3I/ATLAS, the 7.6 billion-year-old interstellar comet passing Earth. Learn about its ancient origins ...

Comet C/2025 R2 (SWAN)'s backdrop is dominated by the Eagle Nebula — a vast cosmic structure of dust and hydrogen-rich gas that glows with its own light, having been ionized by the radiation emitted ...

The interstellar comet 3I/ATLAS is becoming brighter and greener as it nears Earth, a phenomenon attributed to the vaporization of ice and dust.

A shocking image shows how the night sky is being crowded by satellites. Astrophotographers observing Comet C/2025 A6 (Lemmon) have captured striking evidence of how rapidly Earth’s near-space ...

The comet will come much closer to Jupiter in March, zipping within 33 million miles. It will be the mid-2030s before it ...

Comet 3I/ATLAS, the third interstellar object ever detected, will swing closest to Earth overnight from Thursday to Friday ...