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Know the Cosmos and our place within it.
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Empowering the world's citizens to advance space science and exploration.

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“Exploration is in our nature.” - Carl Sagan

Planetary Radio Episodes

Since 2002, Planetary Radio has visited with a scientist, engineer, project manager, advocate, or writer who provides a unique perspective on the quest for knowledge about our Solar System and beyond. The full show archive is available for free.

Artist concept of the surface of TRAPPIST-1f

Planetary Radio

Discovering life elsewhere: How can we be sure?

NASA’s Jim Green and Mary Voytek want the science community to develop tools that will help us evaluate potential evidence of life beyond Earth.

Planetary Radio

Arsenic and Odd Life

Arsenic and Odd Life

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