Predicted to reach perihelion again in 2028, it will give astronomers a chance to get additional insights.

Researchers detail a 2035 Solar Oberth maneuver mission using chemical propulsion to intercept interstellar comet 3I/ATLAS ...

Initial analysis suggested the nucleus was approximately 13.7 kilometers wide (roughly city-sized); however, researchers believe this may have been an overestimate. It is likely a long-period comet ...

INSIDE THIS REPORT The discovery did not arrive with spectacle. It arrived in spectral lines—quiet, technical, and unmistakable. NASA’s SPHEREx telescope has now detected organic molecules streaming ...

Using the Swift telescope, hydroxyl emissions glowed with ultraviolet light, resembling fireworks in slow motion. The presence of these signals, which are ...

NASA's SPHEREx space telescope detected organic molecules coming off comet 3I/ATLAS as the interstellar visitor made its ...

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the ...

The object is known as C/2026 A1 (MAPS), discovered extremely recently on January 20 by a group of French amateur astronomers ...

Astronomers are tracking a visitor called 3I/ATLAS, the third confirmed interstellar object ever observed. The two previous instances were 1I/’Oumuamua in 2017 and 2I/Borisov in 2019. 3I/ATLAS is ...

January brought a wide range of thoughtful science conversations featuring researchers from the SETI Institute, spanning everything from hands-on planetary defense with citizen scientists to careful ...

During a special observation run earlier this month, NASA’s TESS space telescope recorded the interstellar comet’s subtle glow and tail, adding to archived observations that may reveal clues about ...

The comet broke into pieces after making a close approach around the sun in October 2025. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.