Over the next two weeks, we’ll have the chance to see a rare green comet that is flying by the Earth for the first time in about 50,000 years. At its closest point on Wednesday, it will come ...

Look up with binoculars early tomorrow morning (Sept. 10) to spot Comet 21P/Giacobini-Zinner whizzing across the sky. Here, astrophotographer Alexander Vasenin caught a photo of the comet from ...

The Comet C/2022 E3 (ZTF). Photo by Don Bartlett/NASA. The so-called “green comet” will pass closest to Earth on Wednesday and Thursday, but you’ll probably need binoculars to see it in San ...

The green color is from carbon and nitrogen heating up. The comet will come close to Earth on Dec. 12, and then go around the sun on Jan. 3. After that, it will get flung out of our solar system ...

A great chance to catch one of these celestial visitors is overnight tonight, when Comet 21P/Giacobini-Zinner will be best visible in binoculars or a telescope. The comet, also known as "21P ...