Comet SWAN isn't the biggest or brightest comet that can be seen from Earth, but it could be the last one until Halley's ...

A supermoon will hang in the night sky bigger and brighter than usual during its perigee, and a great time to head outside to ...

Newly discovered comet C/2025 R2 (SWAN) will soon be gracing our evening sky. Here's how to see it and what to expect.

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously thought, astronomers say.

Comet C/2025 R2 (SWAN) passed perihelion – its closest point to the sun – on September 12, at a distance of roughly 75.20 ...

You’re looking at a building block of someone else’s home, said planetary astronomer Karen Meech as the first calibrated images of comet 3I/ATLAS appeared on screens at the Gemini South Observatory.

Few cosmic visitors have captured the fascination of astronomers quite like the interstellar comet 3I/ATLAS. Hurtling through ...

As with many big space stories, 3I/ATLAS is getting a fair share of attention as well as some more controversial theories ...