The solar system was packed with 50 to 100 protoplanets billions of years ago. Not all of them lived to tell the tale of the ...

A new classification scheme may help us better understand planet formation — including the history of our own family of worlds.

New connections discovered between the Sun's photosphere and CI chondrites meteorites, providing clues about the origin of materials.

A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, according to a new study.

A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system ...

The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

Astrology devotees believe that Mercury retrograde disrupts communication, technology and travel. To counterbalance that ...

During a retrograde period, many astrologers recommend that people slow down and reevaluate the things that the planet rules ...

The first Mercury retrograde 2025 isn't a bad thing although it challenges you to rethink who you are and how you want to ...

They range in size from the planet-sized Titan, which is larger than Mercury, to tiny potato-shaped moons ... more moons than ...