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

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

This week's science news.

Our solar system may have hosted up to six giant planets in its first hundred million years, a new study suggests. The ...

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

This small, unassuming mineral may be older than Earth itself. Krotite reminds us of the vast timescales and surprising ...

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The solar system is embedded within the expanding solar atmosphere, i.e., the solar wind, a tenuous plasma, consisting mostly of protons and electrons, continuously emitted by the Sun. Each body that ...

Research in Solar System planetary science spans the origin, evolution and present‐day processes affecting planets, moons, minor bodies and their interactions. The field addresses how protoplanetary ...

Estimating ages of specific events is one of the most difficult problems in astrophysics. While we have a precise (and probably accurate) age for the solar system, we do not have precise ages for each ...

Oh, we humans do love a cleanly defined boundary, don’t we? They make things easier, after all. If we’re trying to categorize something, knowing what labeled bin to put it in is handy. If we’re ...