Perihelion is the point on an orbital course that brings a body closest to the sun. C/2025 K1 (ATLAS) is an Oort cloud comet ...

The observatory’s proximity to Kirkwood Avenue, a hotspot for IU students, helps attract people outside of the astronomy ...

Usually, sunlight makes cometary gases glow green from diatomic carbon (C2) or blue from ionized carbon monoxide (CO+). With ...

From Levitation’s Halloween Freakend to Hotel Vegas, here are 16 Austin shows and parties that will keep your Halloweekend ...

Interstellar comet 3I/ATLAS on Wednesday reached its closest point to the Sun, a point known as perihelion. Although this ...

Halloween is upon us and the 2025 spooky season is abuzz with talk of three cosmic visitors — Comet Lemmon, Comet SWAN and the interstellar traveler 3I ATLAS — said to be haunting the night sky. But ...

Interstellar invader Comet 3I/ATLAS is still full of surprises — an unexpected brightening has scientists baffled ...

Modern astronomy is giving us unprecedented views of the asteroids, comets, and other small bodies that litter our cosmic ...

Here's where Comet 3I/ATLAS, Lemmon and SWAN are in the Halloween sky.

A trio of meteor showers sends flashes of light across our skies this month, and the first week will feature the largest and ...

I/ATLAS is an interstellar object — the third known visitor from beyond our solar system — now sweeping past the Sun on a one ...

A comet older than our Solar System is within backyard astronomers’ reach. Comet 3I/ATLAS, a rare interstellar visitor discovered in July 2025 by the NASA-funded ATLAS survey in Chile, has emerged ...