SPHEREx tracked the interstellar comet as it grew considerably brighter after perihelion.

The latest data from the Webb telescope (reported here) indicates that the plume of gas and dust surrounding 3I/ATLAS contains water (H₂O), carbon dioxide (CO₂), carbon monoxide (CO) and methane (CH₄) ...

NASA’s SPHEREx mission observed infrared emissions from interstellar comet 3I/ATLAS, documenting changes in dust, gas, and ...

Comet 3I/ATLAS was full-on erupting into space in December 2025, after its close flyby of the sun, causing it to significantly brighten. Even water ice was quickly sublimating into gas in ...

NASA’s SPHEREx telescope spotted interstellar visitor comet 3I/ATLAS flaring up while exiting the solar system. Scientists explain what caused it.

For one, it came down to timing. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the latest updates on rocket launches, ...

NASA's infrared telescope SPHEREx captured stunning images of interstellar comet 3I/ATLAS as it exited the solar system.

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

Scientists found new evidence (or lack thereof) disproving the conspiracy theory that interstellar comet 3I/ATLAS is alien technology.