That is the provocative question at the heart of the latest developments surrounding the interstellar comet 3I/ATLAS, as new NASA data sharpen the picture of its composition while an unusual orbital ...
NASA released new images of 3I/ATLAS, the third comet ever to be discovered in Earth's cosmic neighborhood originating from ...
When a faint green smudge appeared in images from a backyard telescope in Aguadilla, Puerto Rico, on Nov. 22, 2025, astronomers did not expect it to upend basic assumptions about how comets work. Yet ...