If the new Vera C. Rubin Observatory had begun its science validation phase a few weeks earlier, it might have been up and running in time to discover 3I/ATLAS first.

3I/ATLAS is now exiting our solar system at more than 137,000 miles per hour.

A rare comet from another star system is revealing just how different alien solar systems may be from our own.

The Southwest Research Institute-led Ultraviolet Spectrograph (UVS) instruments aboard ESA's Jupiter Icy Moons Explorer ...

Comet 3I/ATLAS was imaged and studied simultaneously by the Juice and Europa Clipper spacecraft as it flew past the Sun ...

The interstellar comet 3I/ATLAS changed significantly as it flew by the sun last fall, astronomers have discovered.

Space lovers have more news to jump for joy about, as recent discoveries of an interstellar invader have revealed something marvelous. A comet named 3I/ATLAS was first discovered on July 1, 2025, and ...

Comet PanSTARRS, also known as comet C/2025 R3 will be visible before sunrise this week. Here's how, when and where to view.

Nasa's Hubble Telescope captured the rare phenomenon of a comet breaking apart, catching scientists off guard until they saw the jaw-dropping proof for themselves. Hubble captured images C/2025 K1 ...