From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar ...

Interstellar object 3I/ATLAS is confirmed as a natural comet from beyond our solar system, posing no threat to Earth despite ...

Nobody was expecting very strong energy dissipation inside Titan,” says Flavio Petricca, a postdoctoral fellow at NASA’s Jet ...

Interstellar object 3I/ATLAS, the third such visitor ever observed, is exhibiting unusual energy and chemical behavior as it ...

Harvard physicist Avi Loeb challenges NASA, suggesting the iron-rich composition of interstellar object 3I/ATLAS indicates ...

New details of deliberations show how aides with overlapping agendas drove the United States toward a militarized ...

Leading X-ray space telescopes XMM-Newton and XRISM have spotted a never-seen-before blast from a supermassive black hole. In ...

The first unmistakable signal from another intelligence would rank alongside fire and writing in the story of our species, ...

As one of the most beloved traditions of contemporary 'Doctor Who' turns 20, we look back on why the special that started it ...

A ship carrying nearly 40 scientists will spend a month doing research at the edge of the Antarctic ice. There are goals but no guarantees, and plenty of perils.

Radar operators at Washington National Airport and nearby military bases began tracking unidentified objects moving through restricted airspace near the White House and the Pentagon. The returns were ...