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The Planetary Society is the largest and most effective nonprofit organization that promotes the exploration of space through education, advocacy, and…
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News
What a view!
5+ mon, 2+ day ago (761+ words) Comets and Kuiper Belt Objects. The Downlink • Apr 10, 2026 The Artemis II lunar flyby yielded...over 11,000 asteroids. This includes hundreds of objects beyond Neptune and 33 previously unknown near-Earth...
Setting our sights
7+ mon, 6+ day ago (371+ words) Capturing space exploration in 2025. The Downlink • Feb 06, 2026 The next launch window for Artemis II opens on March 6. When the mission takes off, it will send humans back to the Moon for the first time since 1972. It will also be the…...
On the launchpad
5+ mon, 2+ week ago (479+ words) Comets and Kuiper Belt Objects. The Downlink • Mar 27, 2026 As you’ll read below, NASA dropped...
The Planetary Society's 2025 book club review
8+ mon, 3+ week ago (268+ words) Capturing space exploration in 2025. Written by Mat Kaplan Senior Communications Adviser and former Host of Planetary Radio, The Planetary Society December 18, 2025 Read any good books lately? Members of The Planetary Society’s book club have read at least 12! We’ve also enjoyed…...
On cloud nine | The Planetary Society
8+ mon, 3+ day ago (508+ words) Capturing space exploration in 2025. The Downlink • Jan 09, 2026 You might think that astronomers were having a little fun when they chose the name “Cloud-9” for the newly-discovered dark matter cloud. But its idiomatic familiarity is just a coincidence: Cloud-9 was named…...
Best of 2025
10+ mon, 1+ week ago (142+ words) How Earth shapes our exploration of other worlds. Know the Cosmos and our place within it. Over the past year, a lot has happened in space science and exploration. What were the highlights for you? Cast your vote today! Best…...
The Planetary Society on NASA's "Ignition" Announcements
5+ mon, 2+ week ago (277+ words) Comets and Kuiper Belt Objects. Press StatementMarch 25, 2026 Pasadena, CA (March 25, 2026)...
2025 Impact Report
9+ mon, 4+ week ago (822+ words) How Earth shapes our exploration of other worlds. Know the Cosmos and our place within it. In 2025, The Planetary Society advanced its mission to empower the world’s citizens to advocate for space science and exploration. Through advocacy, education, science, and…...
An interplanetary team effort
6+ mon, 3+ week ago (439+ words) We need 250 new members by February 28. Support a future full of science and exploration! Capturing space exploration in 2025. The Downlink • Feb 13, 2026 The Curiosity rover may be traversing the Martian surface all alone, but it’s got plenty of teammates here on…...
The Planetary Society urges Congress to reject historic cuts to NASA,…
5+ mon, 1+ week ago (210+ words) Comets and Kuiper Belt Objects. For Immediate ReleaseApril 03, 2026 The Planetary Society is...