How does a star affect the makeup of its planets? And what does this mean for the habitability of distant worlds? Carnegie's ...

Astronomers have finally pinned down both the mass and distance of a solitary “rogue” planet, a world that drifts through ...

While the Milankovitch Cycles operate on timescales far longer than human lifespans, their effects are always at play.

January nights do not always feel generous. The cold arrives early, clouds linger, and most evenings seem too quiet for ...

Shaking caused by quakes may cause ocean floor vents to release more nutrients, triggering blooms in plant-like organisms ...

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

Around the bright star Fomalhaut, astronomers spotted glowing clouds of debris left behind by colossal collisions between ...

On Saturday (Jan. 10), for example, we will see three satellites on one side of Jupiter (going outward from the planet: Ganymede, Io and Europa ), while the fourth ( Callisto) remains all by itself on ...