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

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.

So far the exocomet has kept everyone guessing, with mainstream scientists ruling out the possibility of it possessing any ...

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.

Sky watchers can expect several astronomical events this last month of the year, including brief appearances of some planets ...

The United States is treating a strange visitor from deep space as both a scientific windfall and a potential national ...

Comet 3I/ATLAS, the third interstellar object since 1I/Oumuamua (2017) and 2I/Borisov (2019), was spotted by the Chile-based ...

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

Such progress is to be celebrated but it has also come at a cost. Defending a small nation in a turbulent region is a serious ...