NASA launched the Deep Impact mission - sending a spacecraft to collide head-on with a comet. Using an impactor equivalent to ...

A celestial spectacle from Halley's Comet will illuminate the night sky this week. Here's how to watch and when to look up.

Back in 1986, when the comet last swung through the inner solar system, it lost about 1/1,000th of its mass. Rice said that ...

There's disappointment for astronomers as the newly-discovered bright green comet appears to have disintegrated ...

The telescope that first detected Comet C/2023 A3 is a 1.2-meter Schmidt located in Xuyi County, roughly 30 miles (50 kilometers) northwest of PMO’s original site. The Xuyi station reported ...