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Stories, updates, insights, and original analysis from The Planetary Society.

The companions of the planets

Turn your minds to the moons of our solar system, the missions to explore them, and the awe they inspire in us.

Solar System History 101

How did our solar system come to be? Why are the planets, asteroids, comets, and other small worlds where they are now?

Congress Comes Through for NASA Science, But Not Artemis

Planetary Society priorities, including Mars Sample Return and the Roman Space Telescope, were funded by Congress in its NASA budget. But Project Artemis's human landing system received only a fraction of its requested amount, pushing a return to the Moon further into the 2020s.

Calibrating Mars

Two colorful calibration targets will help scientists measure what the Perseverance rover sees on Mars.

The Year 2020 in Pictures

These pictures helped us find hope and perseverance during a tough year on planet Earth.

The Best of 2020

Results from your votes for the best of planetary science and exploration in 2020.

Would you care for a sample?

Bringing samples of the Moon and Ryugu to Earth, and mourning further damage to the Arecibo Observatory.

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Space is vast. There's a lot of exploring to do.

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