Across history, ancient civilizations crafted prototypes for many of the modern mechanisms that have become integral to ...

Nearly 400 years ago, Galileo looked at the Pleiades star cluster through his telescope and noticed that the seven or so ...

Asteroid 2024 YR4 has a 0.0017% chance of hitting Earth, but media reports too often ignore the unlikelihood of impact in reports of near-Earth asteroids, a Tucson astronomer says.