All eyes are on the sky, as the exocomet will fly by Earth, the closest ever, at 1.7 AU on December 19. It will soon be ...

As the year draws to a close, the December night skies promise a dazzling array of cosmic spectacles. From the rare visit of an interstellar comet to the fiery trails of one of the year's best meteor ...

To catch the Geminids peak, look to the eastern sky all evening on Dec. 13 and Dec. 14. The meteors will appear near the bright planet Jupiter. With the darkest possible skies, you could see up to 120 ...

December is an exciting month for those who like to look up, with a comet, a meteor shower, and a conjunction between the ...

A look at how 3I/ATLAS's baffling anomalies are reshaping US homeland-defence strategy and elevating the Golden Dome ...

When the first known object from another star system swept through our cosmic backyard, it did not behave the way any ...

The Geminids peak Dec. 13, producing up to 120 meteors per hour visible from 8 p.m. until sunrise. Plus, a recap of ...

December's full moon 2025 will be the cold supermoon, set to rise amid the longest nights of the year and start of spectacular Geminids meteor shower.

A world preparing for one interstellar mystery is now confronting the legacy of another mission built for a different kind of threat. A silent shift in our planetary-defense strategy is underway.

Key Findings It may not need to strike Earth to become a threat. Our defensive playbook was built for rocks, not unknown ...

Researchers refined the trajectory of interstellar comet 3I/ATLAS using ExoMars Trace Gas Orbiter data, improving predictions and enabling precise monitoring for scientific study and planetary defense ...

3I/ATLAS is only the third known interstellar visitor, hence the prefix “3I.” The second known interstellar body, Comet 2I/Borisov, was discovered by the Russian astronomer Gennady Borisov in August ...