Astronomers have captured an exceptionally rare view of young planets in mid-transformation, revealing how bloated, giant worlds may shrink into the most common planets in the galaxy. Astronomers have ...

Jupiter is old. Like 4.5 billion years old. It started as a swirling disk of gas and dust that formed into a pretty big ...

What was originally thought to be a planet orbiting the Fomalhaut star was probably just the fallout of a wild collision.

The launch window for a small satellite developed in partnership with Lawrence Livermore National Laboratory (LLNL) opened this week at Vandenberg Space Force Base in Santa Barbara County.

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 ...

One of the biggest recent surprises in astronomy is the discovery that most stars like the Sun harbor a planet between the ...

A solar conjunction occurs as Venus' orbit carries it into alignment with the sun and Earth. Venus will align with the sun ...

Jupiter's moon Europa is on the short list of places in our solar system seen as promising in the search for life beyond ...

Stars and planets are inextricably linked. They form together and stars shape the fate of planets. Stars create the dusty ...

Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo ...

Short-lived radioisotopes such as aluminum-26 influenced early solar system heat, water retention and the formation of Earth-like rocky planets, according to meteorite analyses and models.

What seemed like new planets around Fomalhaut were actually expanding dust clouds from violent planetary collisions seen by Hubble.