A new comet was spotted between the mysterious 3I/Atlas and the Earth, and it also comes with some unexpected characteristics. The new comet, now called the C/2025 VI Borisov, was discovered by ...

Six years after the world witnessed the first confirmed interstellar visitor, Comet 2I/Borisov, scientists are abuzz with new revelations about NASA’s latest cosmic guest, 3I/ATLAS. Captured in ...

The total mass loss rate and outflow speed from its 3I/Atlas surface was used to infer its mass. The mass of 3I/ATLAS must be bigger than 33 billion tons. The diameter of its solid-density nucleus ...

A strange comet recently spotted speeding its way toward Earth and the sun has prompted some comparisons to an infamous interstellar object known as 3I/ATLAS. Because the newly discovered space object ...

Comet 3I/ATLAS arrived from beyond the Solar System carrying a chemical story unlike anything astronomers had measured before ...

The NASA/ESA Hubble Space Telescope reobserved interstellar comet 3I/ATLAS on 30 November with its Wide Field Camera 3 instrument. At the time, the comet was about 286 million kilometers from Earth.

JWST detected rising methane emissions from interstellar comet 3I/ATLAS, exposing ancient interior ice and offering new ...