The monstrous 85-mile-wide comet C/2014 UN271 is the second most distant body originating from the Oort Cloud found to be chemically active.

The icy traveler, called 3I/ATLAS or Comet ATLAS, was discovered on July 1 by the NASA -funded ATLAS survey telescope in Río Hurtado, Chile. This enormous space snowball came from the direction of the ...

On March 8, ALMA spotted a pair of jets blasting out of the comet's nucleus – its solid icy core. Spectrometry revealed that ...

These things take millions of years to go from one stellar neighborhood to another, so this thing has likely been traveling ...

“Comet of the century” will be visible for first time in 80,000 years. Here’s how to glimpse it Comet Tsuchinshan-Atlas will make a pass close to the Sun throughout late September and October.

‘Comet of the century’ that was last viewed by neanderthals 80,000 years ago could be seen tonight. Scientists say Comet A3 could even be spotted with naked eye. Tara Cobham.