As the United States prepares to celebrate its 250th anniversary, the history of the solar system tells its own story of ...

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

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 ...

Scientists have long believed that comets and a type of very primitive meteorite called carbonaceous chondrites were the sources of early Earth’s volatile elements — which include hydrogen, nitrogen, ...

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 ...

In July 2025, astronomers spotted something remarkable passing through our Solar System, an object that had not come from ...

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Introduction: NASA's solar system exploration paradigm : the first fifty years and a look at the next fifty / James L. Green and Kristen J. Erickson -- Part I. Overview. Exploring the Solar System : ...

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