Mars' moon Phobos may actually be a comet — or at least part of one — that was gravitationally captured by the Red Planet long ago, a new preprint study based on previously unpublished photos ...

A dazzling snapshot from ESO’s Paranal Observatory captures a rare sky parade — the Moon, a comet, and nearly every visible planet strung across the heavens. This celestial lineup is an optical ...

NASA's Perseverance rover on Mars has collected its 24th sample of Jezero Crater. The 'Comet Geyser' sample is "great for ...

When the comet nears the bright star Capella in the Auriga constellation, it should be viewable from Earth on Sunday Feb. 5. When it makes its way near Mars in the Taurus constellation ...

Here's what will be visible in the night sky in the United States in May 2025. On May 12, the skies will be treated to the Flower Moon, also known as the Corn Planting Moon, Milk Moon, Hare's Moon and ...

In those drill sites, Curiosity detected deposits containing an iron carbonate material called siderite. According to Ben ...

Perhaps the best known of all comets is Halley, correctly pronounced so that it rhymes with rally, not daily. It is named after the 17th-18th century astronomer Edmond Halley. This ...

Next, Tianwen 2 will fly back to Earth's orbit and release its reentry module, which will return to the ground with the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. When a new comet ...

There’s always another comet. Last year there was much ballyhoo over the so-called “devil comet,” some will-it-won’t-it drama of Tsunchinshan-ATLAS, and the sudden discovery (and quick ...