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

The Bounty of Iron Meteorites Found on Mars

Something new and wonderful appeared in the Meteoritical Bulletin Database—an entire listing of meteorites found on Mars by robotic rovers and their science teams from the years 2005–2017.

What's the benefit of sample return?

With Hayabusa2 at Ryugu and OSIRIS-REx closing on Bennu, it's the summer of sample return. Why do scientists go to so much trouble for a piece of a another world?

Rotatin' Ryugu!

Hayabusa2 continues to approach asteroid Ryugu, revealing the 900-meter-wide world in all its glory.

Favorite Astro Plots: The Pyroxene Quadrilateral

Petrology is a field of science in which scientists study the compositions of rocks and minerals and interpret their geologic history. A common graph petrologists use is the “pyroxene quadrilateral.” These graphs, like photos of space, can reveal an understanding of the remotest parts of the solar system.

Dawn Journal: Spiralling Down

Propelled by the perfect combination of xenon ions, hydrazine rocket propellant and adrenaline, Dawn is on the verge of its most ambitious exploits yet.

Hayabusa2: Ryugu takes shape

Hayabusa2 is now less than 1000 kilometers away from Ryugu, and the tiny asteroid is beginning to betray its shape.

Hayabusa2's Approach phase has begun with a new photo of Ryugu!

On June 3, Hayabusa2 ended use of its ion engines, for now, and is coasting the remaining distance toward Ryugu. It's using an optical navigation camera to image the asteroid's position against a field of background stars to help it navigate.

Big news from the magnetosphere

At five years and counting, the Van Allen Probes mission continues to reshape our thinking about how Earth’s radiation belts flex and reconfigure under the influence of solar storms.

A WIYN-win partnership

NASA and the National Science Foundation are teaming up to observe exoplanets discovered by Kepler and TESS.

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