The Bernardinelli-Bernstein comet, located in the Oort Cloud, was observed by the ALMA to record the first evidence of active ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

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 ...

A comet nucleus is the solid core of a comet consisting of frozen molecules including water, carbon monoxide, carbon dioxide, methane and ammonia as well as other inorganic and organic molecules ...

It's prime time to see the comet known as C/2022 E3, marked by its bright green nucleus and long faint ion tail. The comet has been visible for some time with telescopes and binoculars — but the ...

In 1986, the European spacecraft Giotto became one of the first spacecraft to encounter and photograph the nucleus of a comet, passing and imaging Halley’s nucleus as it receded from the Sun ...

The first modern description of a comet nucleus was suggested by Fred Whipple in the 1950s. In his model, a comet was a more or less uniform body that he called an “icy conglomerate,” composed ...

Scientists aimed ALMA at the comet in March 2024 and saw carbon monoxide — a gas that usually doesn’t show up in observations that far away — gushing out of its surface in jets. The team also picked ...

The comet's approach toward Earth coincides with a total solar eclipse on April 8. Around that time, 12P/Pons-Brooks will be at or near perihelion, the point during orbit when it's closest to the sun.

While some comet experts think Comet Tsunchinchan-ATLAS ... Australian amateur astronomer Terry Lovejoy, discovered a very tiny comet, whose nucleus measured only 1,600 feet (500 meters) ...

Goodbye, ATLAS. ATLAS is heading away from us, but not unscathed. On January 19, the bright little speck of its nucleus vanished, suggesting that the comet fragmented after its passage around the ...