3I/ATLAS is the third confirmed interstellar object to whoosh through our solar system, after 1I/ʻOumuamua (discovered in ...

What makes 3I/ATLAS especially intriguing is that the comet might be three billion years older than our entire Solar System.

The interstellar object 3I/ATLAS has been something of a mystery ever since it graced our solar system. From all outward ...

Conditions are near-perfect to spot this celestial visitor, which won't appear again in our night sky for another millennium.

Discover Colorado's October stargazing gems with the Orionid meteor shower peaking October 20-21 and twin comets Lemmon and ...

Comet C/2025 A6 Lemmon is getting brighter and whether you have a telescope, binoculars or just your eyes, here’s how you can catch a glimpse.

A new La Niña has arrived, according to forecasters at the Climate Prediction Center. Sea-surface temperatures near the West ...

ESA’s ExoMars Trace Gas Orbiter captured rare close-up images of comet 3I/ATLAS passing Mars at 130,000 mph — the faint interstellar visitor showed a gas coma but no tail.

ESA’s Mars orbiters have observed comet 3I/ATLAS, only the third interstellar comet ever discovered. The faint, distant ...

The European Space Agency (ESA) shared more data on the 3I/ATLAS interstellar comet after pointing to Mars orbiters at it.

Two rare bright comets are visiting our neighborhood this month, making for once-in-a-lifetime viewing. The comets, C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), are already showing off their green tails ...

NASA STEREO-A satellite's SECCHI/HI-2 camera captured this imagery of Comet C/2021 A1 (Leonard) Credit: Space.com | footage courtesy: NASA/NRL/B.Gallagher | edited by Steve Spaleta ...