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

Solar System History 101

How did our solar system come to be? Why are the planets, asteroids, comets, and other small worlds where they are now?

Can the Moon be upside down?

When you think about how the Moon looks in the night sky, you might never have considered that it looks different to people in other parts of the world. But really, perspective is all relative.

Sample Return Roundup

It's a banner year for sample return missions. In 2020, China, Japan, and the United States are all scheduled to have sample return missions in flight, seeking to retrieve material from near-Earth asteroids, the Moon, and eventually Mars.

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.

Chandrayaan-2 Enters Lunar Orbit

The combination lander, rover, and orbiter fired its main engine to enter orbit around the Moon at 09:02 IST (03:32 UTC) on 20 August.

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Space is vast. There's a lot of exploring to do.

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