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

The monsterous 85-mile-wide comet C/2014 UN271 isn't just the largest icy rock in the Oort Cloud, it's the second most ...

NASA observes largest Oort Cloud comet, C/2014 UN271, exploding with CO gas jets, thanks to ALMA’s deep-space capabilities.

A 15th-century copper plate from the Vijayanagara Empire has revealed India’s first direct mention of Halley’s Comet, proving the astronomical brilliance of ancient Indian scholars.

A 15th-century copper plate inscription from Srisailam reveals India's first epigraphic Halley`s Comet sighting, dated June ...

A newly discovered comet, called C/2025 F2 (SWAN), ... EarthSky has reported that recent observations suggest the comet completes one orbit around the sun every 2.1 million years.

The Comet Observation Database (COBS) expects the Nishimura Comet to exhibit an apparent magnitude of up to 3.0, making it comfortably visible to the naked eye.

The latest ground-based observations from telescopes do seem to imply the comet has fallen apart, said Dr. Karl Battams, a computational scientist within the Solar and Heliospheric Physics Branch ...

Currently, it displays the classic look for a bright comet, flaunting a starlike head and a prominent tail.As we crossed over from September into October, a consensus of observations reported on ...

For the past several days, Pons-Brooks has remained around magnitude 11.6 and 11.7, according to the Comet Observation database. Even better, the outburst created a fairly compact coma whose light ...

When comet C/2024 G3 reaches perihelion, it will come within just 13.5 million kilometers of the sun—for context, Mercury, the planet closest to the sun, orbits the star at a distance of 47 ...

While some comet experts think Comet Tsunchinchan-ATLAS (C/2023 A3) will "soon be no longer," others think it's doing just fine.