The cryovolcanic "centaur" comet 29P/Schwassmann-Wachmann has erupted four times in less than 48 hours, becoming unusually ...

The comet’s coma measures around 130,000 miles (209,000 kilometers) in diameter, with a tail extending 18 million miles (29 million kilometers), but it's getting fainter and smaller as it heads ...

comet was easily visible to the unaided eye in dark skies (and the Moon was not interfering this night), so was about magnitude 4 to 4.5. The tail was visible to the eye, not just the bright coma ...

Above: Takaya Okada (Japan) observes Comet C/2023 A3 with his EVSCOPE2. In the background you can see the comet tracing its ...

Hale-Bopp originated in the Oort Cloud, a theoretical shell of icy planetesimals surrounding the sun in the outer reaches of ...

"The comet's nucleus is clearly visible, surrounded by a dusty coma and trailing an impressively long tail," ESA said. "SOHO sees the large dust tail edge-on, curving in on itself as it is pushed ...

Last year, another comet, 12P/Pons-Brooks, drew attention with similar explosions that gave it a horned shape, earning it the ...

While many dubbed it the "Halloween comet," the cosmic snowball of ice and dust more officially known as C/2024 S1 (ATLAS), disintegrated on Oct. 28 as it approached the sun. The comet's final ...

A recently discovered comet that some stargazers had hoped to see during Halloween week has disintegrated before the day of ghosts and ghouls. NASA confirmed Tuesday its sun-observing spacecraft ...

Whatever is currently happening with comet C/2024 S1 ATLAS is remarkable. On October 19 at 3:00 UT it was 7m5 bright, showed a 230” coma and an 1° ion tail at pa 258. Image taken with 12"/3.6 ...

It isn't just hype, there is an actual chance of seeing another comet this month and the timing may line up perfectly with Halloween night. Comet ATLAS (C/2024 S1) is currently streaking towards ...

After an eruption, or outburst, the comet's coma — a fuzzy, reflective cloud of cryomagma — expands, making the comet appear much brighter as it reflects more of the sun's rays. A previous ...