On Monday night you may have a chance to witness the moon obscuring the Red Planet at its brightest, as well as a comet’s closest approach to the sun.

G3 may be hard to see due to weather patterns and the California wildfires, said Tim Brothers of the Massachusetts Institute of Technology.

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the northern hemisphere).

Do the periods of comets decrease because they lose mass every time they get near the Sun? Robert BaileyConover, Wisconsin Great question! Assuming you're referring specifically to the orbital period - in other words,

Comet ATLAS hit a maximum magnitude of -3.4 during its close encounter with the sun, just shy of the brightness of Venus in the night sky.

NASA astronaut Don Pettit has snapped a striking shot of the super-bright comet racing past our planet for the first time in 160,000 years, as it lit up the night skies across the globe.

Skies over South Carolina kick off 2025 with a planet parade, ancient comet and the muse of "Beyond Antares," a 23rd-century love song from "Star Trek" fame.

Kiwis are soon likely to get a direct glimpse at a passing comet that’s already been making for stunning pictures.

Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend.

A comet and multiple planets will be visible in the night sky tonight. There is a much shorter window to be able to see the comet which is just after sunset

it will also pass in front of the more-brilliantly-red-than-usual Mars in an event known as a lunar occultation. But that’s not all January’s sky has to offer. A new comet, expected to be the ...

Because the period of an object does not depend on its mass, comets’ orbital periods remain unchanged due to mass loss.