More than 75 years have passed since American astronomer Fred Whipple (1906–2004) introduced his famous “dirty snowball” ...

Most comets come from the far-off Kuiper Belt and Oort cloud, which lie past the orbits of the outer planets. The ...

Halley’s Comet causes the Orionid meteor shower, which peaks overnight on Oct. 21-22, 2026. Here’s when and how to see up to ...

It was early January 2025 when a faint light spot was observed at the Mt. Lemmon Observatory in Arizona. Follow-up observations revealed that the object was a comet visiting from the outer edge of the ...

The doom embroidered into the Bayeux tapestry was far more than medieval superstition. In a cosmos where the heavens directly ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A brightening comet reaches a key moment on Sunday morning ...

Comet 41P/Tuttle-Giacobini-Kresák is a bit of a weirdo as far as comets are concerned. Yet another weirdo in the recent string of them, with the king of the weird-o comets, 3I/ATLAS, having recently ...

This is a Hubble Space Telescope image of the interstellar comet 3I/ATLAS. Hubble photographed the comet on July 21, 2025, when the comet was 277 million miles from Earth. Hubble shows that the comet ...

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Computer simulation of the interstellar comet 3I/ATLAS, based on photographs taken by the European Southern Observatory, is said to display its vivid blue glow and mysterious jet emissions as it ...