New 3I/ATLAS images from NASA and the ESA suggest the interstellar comet is active as it approaches Earth in December.

NASA is sounding a clear alarm about the way SpaceX is reshaping low orbit, warning that the company’s satellite swarms and ...

New images taken by the Hubble Space Telescope and a Jupiter-bound mission showcase interstellar comet 3I/ATLAS ahead of its ...

Interstellar Comet 3I/ATLAS is nearing Earth. Hubble and Juice captured new images, revealing an alien object with a strange CO2 composition.

R esearchers have calculated one of the most precise estimates for the expansion rate of the universe today, and it turns out ...

An international team of astronomers, led by SRON, has observed a sudden outburst of matter near the supermassive black hole ...

Interstellar object 3I/ATLAS exhibits 16.16-hour light variability linked to collimated jets. Hubble and Webb Telescope ...

Interstellar comet 3I/ATLAS is a chemical goldmine, holding life's building blocks four times richer than local comets.

Could one comet rewrite what is known about the chemistry and dynamics of distant planetary systems? That’s the question driving an extraordinary, multi-spacecraft campaign to study 3I/ATLAS-just the ...

NASA has visualized the cataclysm, which is thought to have caused a mysterious eruption of gamma rays captured by telescopes ...

New observations show the comet's two tails and rising activity.