Astronomers around the world are closely watching an interstellar visitor unlike anything formed in our solar system.

Scientists confirm Earth's so-called 'second moon' is just a small, temporary quasi-satellite with no real impact, debunking ...

ESA Mars and Jupiter missions track 3I/ATLAS; the 'rounded spacecraft' look is a stacked‑exposure artefact, with JUICE set ...

Skywatchers can catch a rare glimpse of Comet Lemmon this month, and it won't be back until around the year 3175. Here's how ...

The interstellar object 3I/ATLAS has gathered significant scientific attention, and soon it will reach its closest point to ...

Comet C/2025 A6 (Lemmon) is brightening fast! Discovered in January by the Mount Lemmon Survey, it swings closest to Earth on ...

Comet C/2025 A6 (Lemmon) was discovered early this year by one of the telescopes on — you guessed it — Mount Lemmon, where ...

According to one hypothesis, the comet is responsible for giving humans the swastika symbol, thousands of years in the past.

A rare encounter of two comets this week will have stargazers in awe after nearly a year of no easily seen comets.

It will be a while before you can see it for yourself, however. Halley’s comet was last visible from Earth in 1986, meaning ...

A rare, green-glowing comet will make its closest approach to Earth next week — and it won’t return for more than a thousand ...