Earth is quietly collecting radioactive debris from an ancient stellar explosion as our Solar System drifts through a giant ...

In recent years, whenever astronomers have gazed into the night sky, they’ve noticed something peculiar: Some of its massive stars—the true titans of the cosmos—appear to be missing. The largest of ...

"This dust can penetrate the shielding of the solar system and end up on Earth." When you purchase through links on our site, ...

Neutron stars are the densely compact cores remaining as one possible result of a supernova. These star remnants are ...

Scientists have just managed to reproduce a nuclear reaction that had never been observed directly before. The experiment focuses on p-nuclei, unusual proton-rich isotopes that do not fit into the ...

William Shatner called his trip to space "a funeral," and what he saw when he looked away from Earth will stay with you.

The largest 3D map of the universe reveals over 47 million galaxies, but dark energy remains an unsolved mystery.

Jacksonville startup’s optical power-beaming satellites will deliver up to 10x more energy to client spacecraft on demand — ...

The movie myth perpetuated by classics like "Total Recall" (1990) and "Mission To Mars" (2000) is that exposure to the vacuum ...

From black holes and baby stars to familiar solar system planets, the universe has never looked more glorious thanks to ...

Get a first look at the completed observatory.