Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did ...

The most recent planet discoveries bring the number of known exoplanets–planets outside our solar system–to 236, the researchers told a meeting of the American Astronomical Society in Honolulu on ...

As far-fetched as it may seem, quirks of orbital mechanics could allow hundreds of planets to be packed around a star ...

The TOI-700 star system is home to four planets, including two in its habitable zone that could host liquid water. NASA's Goddard Space Flight Center Habitable planets are those that are just the ...

Over the past three decades, computer models of planetary system formation have gone from fairly crude representations to sophisticated simulations using thousands of different starting points. A ...

Researchers have discovered an atmosphere around a distant, rocky exoplanet named LHS 1140b. The planet is located in its star's "habitable zone," a distance where conditions could allow for liquid ...

Scientists believe there are planets outside our solar system where life is even more abundant and sustainable.

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Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Artist’s conception of the view from the surface of the ...