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

What are binary asteroids?

Binary asteroid systems can be found near Earth, in the main asteroid belt, beyond Neptune, and more.

New wonders to behold

New stars are being born, new missions are being conceived, and new discoveries are being made all the time.

How the European Space Agency Does Planetary Defense

Defending the planet from the hazard of potential asteroid impacts requires investments from the whole world. In Europe, the European Space Agency (ESA) and the European Union both support work to understand and mitigate the threats from near-Earth objects.

The State of Planetary Defense

Vishnu Reddy delivers a sober but hopeful report on our understanding of near-Earth objects, their dangers, and our readiness.

Flying By Home

Vicky Hamilton explores how OSIRIS-REx used its Earth flyby to test instruments on the way to asteroid Bennu.

News brief: OSIRIS-REx finds water on Bennu

OSIRIS-REx team members held a press briefing today at the 2018 American Geophysical Union meeting, and announced that the mission has already found water on asteroid Bennu.

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