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Discovered last month by a telescope in Chile, the comet known as 3I-Atlas is only the third known interstellar object to ...

Observations of Exoplanet WASP-69b has uncovered a 350,000-mile-long comet-like tail. The tail is a result of its escaping ...

A comet that has taken astronomers by surprise could shine as brightly as Venus in the night sky as it passes by Earth over the next few days. Comet C/2024 G3 (ATLAS) was spotted in April last ...

Astronomers recently got a close-up look at the comet, known as C/2014 UN271, flying through deep space with the powerful Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope in Chile.

A rare visitor from another star system has been spotted. It's the interstellar comet 3I/ATLAS, and it was detected on July 1 by the NASA-funded Asteroid Terrestrial-impact Last Alert System, or ...

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 ...

The second, Comet 2I/Borisov, was spotted by amateur astronomer Gennady Borisov of Crimea on Aug. 30, 2019. It streaked through our solar system at 110,000 mph, according to NASA, and behaved more ...

NASA said the comet will make its closest approach to the sun in October, scooting between the orbits of Mars and Earth — but closer to the red planet than us at a safe 150 million miles away.