Learn how you can say farewell to comet 3I/ATLAS as it passes by Earth on Dec. 19, 2025, and what we have learned during its ...
Scientists have been cataloging comet 3I/ATLAS’s journey through the Solar System since July, tracking major milestones as ...
Using the combined might of spacecraft scattered across the Solar System, scientists have built the most detailed map yet of ...
Long before modern observatories and spacecraft, court scribes in ancient China were quietly building one of humanity’s first datasets on the changing sky. Their terse notes on sudden daylight ...
Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's not aliens.) The interstellar comet, originally called A11pl3Z and now ...
3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system. On ...