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

A devil on Mars and defenders of Earth

From dust devils and craters on the Martian surface to spots on the Sun, we’re taking a look at everything new and exciting in space science and exploration this week.

Not a Heart of Ice

Mark Marley explains what planetary scientists mean when they say the word

The Skies of Mini-Neptunes

A GREAT QUEST is underway to discover Earthsize worlds in their stars’ habitable zones. Along the way, astronomers have been surprised to learn that the most typical size of planet in our galaxy is one with no counterpart in our own solar system.

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