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

NASA astronauts ride a commercial rocket

Why do we need NASA when we have SpaceX?

Watching SpaceX's incredible feats, you might wonder whether we need NASA. But in reality the organizations do very different things and rely on each other for success.

Carl Sagan and Chuck Berry

A Planetary Society Retrospective

Look back at the remarkable achievements our members have made over the past 4 decades, alongside other space milestones and events.

Day of Action 2019

Your Impact: September Equinox 2020

We’ve made some big changes to planetary.org, as we continue to advance advocacy, defend Earth, and chart the future of space exploration.

LightSail 2 Orbital Sunrise

LightSail 2 Enters Extended Mission Phase

One year after launch, The Planetary Society’s solar sail spacecraft is embarking on an extended mission dedicated to further advancing solar sailing technology.

A Successful Day of Action

Your Impact: June 2020 Solstice

We're celebrating a successful Day of Action in Washington D.C., remembering SETI@home, and looking forward to LightSail 2's extended mission.

Peggy Whitson in the Cupola

Pictures of Earth

During this singular moment in history as the entire world responds to the COVID-19 pandemic, we thought it would be appropriate to share some of our favorite pictures of Earth from space.

Ann Druyan

The Possible Worlds of Ann Druyan

The executive producer, writer, and director of Cosmos and author of the companion book discusses the show’s third season, and why she believes science is the key to a better future.

Half Earth from Kaguya

The Next 10 Years

Six scientists share the major planetary science discoveries of the past decade, and the questions that will drive the next 10 years of solar system exploration.

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