Unlike Earth's atmosphere it is extremely thin, comparable to a high vacuum chamber in one of our laboratories on Earth. It is also unstable. The comet nucleus releases a constant stream of molecules ...

Philae's historic landing on Comet 67P in 2014 provided crucial data on the comet's surface and internal composition, despite technical setbacks. The mission revealed organic molecules and temperature ...

This is not unusual behavior for a comet, but it can be a sign of nucleus fragmentation – where the main body, or nucleus, of a comet starts to break apart. This probably happens because of what they ...

The comet’s nucleus will miss Mars by about 82,000 miles (132,000 kilometers), shedding material hurtling at about 35 miles per second (56 km/s), relative to Mars and Mars-orbiting spacecraft.

This is not unusual behavior for a comet, but it can be a sign of nucleus fragmentation – where the main body, or nucleus, of ...

It's clearly visible as a front-facing 'spike' coming out of the comet's nucleus in the photographs. The other image of the comet below was taken from a beautiful field at the Dark Sky Alqueva reserve ...

The comet — named Comet C/2014 UN271 — is currently located about 2 billion miles away and estimated to measure about 80 miles across its nucleus, NASA said. Its size, which NASA noted is ...

Pons-Brooks is prone to occasionally spit ice and gas into space, increasing the size of its nucleus and boosting the comet's brightness. That happened in the summer of 2023 when Pons-Brooks ...