As it turns out, the conditions that set Venus and Jupiter up for their conjunctions in the sky are the same that are ...

(Ianm35/iStock/Getty Images Plus) The Solar System is one of the comforting constants of human existence. No matter what else ...

Scientists may have found one of the main sources of rocky material for the solar system, forming diverse populations of baby ...

A rare meteorite found in the Sahara Desert may be evidence of a long-lost "protoplanet" that formed in the early solar ...

The outer solar system once seemed like a quiet backwater. But a glut of tiny, strange moons with unruly orbits are coming ...

What is Planet Nine, and where is it? The question has fascinated astronomers for years. Scientists believe a massive ...

Saturn, the sixth planet from the Sun, holds a distinction no other world in our solar system can claim: its average density ...

Unlike rocky planets such as Mars and Earth, angrites do not have a lot of silicon dioxide. Because of this, astronomers have ...

The ingredients that help make a planet livable did not necessarily come from where many scientists once thought. A new ...

Venus, Jupiter and Mercury are due to form a planet parade in June visible across the US. What to know, including the date ...