Co-founded by Carl Sagan in 1980, The Planetary Society is a member-funded nonprofit organization dedicated to advancing space science and exploration through three core enterprises.

Feb 11, 2026 · Tony studies planetary materials, especially moon rocks and lunar regolith, to understand how planets form and how they change over time and where those key ingredients, like water, may …

Jan 14, 2026 · I'm Sarah Al-Ahmed of The Planetary Society, with more of the human adventure across our solar system and beyond. A vast and invisible bubble surrounds our sun and planets, shielding …

What’s up in the night sky: March 2026 Our monthly feature focuses on easy and fun things to see in the night sky, including eclipses, supermoons, meteor showers, planetary conjunctions, and more.

Dec 8, 2025 · Milky Way on the alpine tundra Planetary Society member Zaakary Barnes photographed this panorama of the Milky Way over Colorado’s Rocky Mountain National Park in June.

Our monthly feature focuses on easy and fun things to see in the night sky, including eclipses, supermoons, meteor showers, planetary conjunctions, and…

Dec 23, 2025 · This could mean that entire planetary systems, like Solar Systems in miniature, could form independently of stars. JWST’s powerful imaging capabilities will no doubt enhance what we …

Jupiter, our largest planet, teaches us how planetary systems evolve. Its four planet-like moons make it a planetary system of its own.

The Planetary Science Caucus is a bipartisan, bicameral congressional caucus dedicated to the promotion of planetary science and exploration, increasing…

Mar 4, 2026 · As debates over NASA's future unfold, The Planetary Society is working to protect and strengthen its science programs. Those are the missions that explore other worlds, defend our planet …