Each of the planets, labeled b, c, d, and e, has a mass between 20% and 30% of Earth's, making them among the smallest yet detected using the radial velocity method.

We often focus on space observatories that peer beyond Earth. But the vast majority of satellites stare right back at us.

Scientists are using an array of instruments to detect other planets, some of which may harbor life—and others that most ...

The world of Sailor Moon does not just relate to our own solar system, but the many unknown planets from the original story ...

An asteroid discovered over 200 years ago which is roughly the size of Germany would have catastrophic consequences for life ...

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The two exoplanets, or planets outside of our solar system, orbit a star called TOI-1453, which is slightly cooler and ...

All planets are made of gas, ice, rock and metal, and models of how planets form usually assume that these materials don't ...

The NEO Surveyor fulfills a 2005 act of Congress ordering NASA to catalog 90% of near-Earth objects larger than 459 feet, ...

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