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

NASA Then & Now

A collection of before and after slider images showing how views of planets in our solar system have changed over the years since NASA was created.

Sketching a science meeting

The Planetary Society has always enjoyed the connections between science and art, so when I saw Leila Qışın's sketches pop up on her Twitter feed during the recent New Horizons team meeting, I knew I had to share them with you.

Some big moons in the Kuiper belt

In a new preprint, Mike Brown and Bryan Butler show evidence that two Kuiper belt moons are even bigger than we used to think. They are Eris' moon Dysnomia, and Orcus' moon Vanth.

DPS/EPSC update: 2007 OR10 has a moon!

The third-largest object known beyond Neptune, 2007 OR10, has a moon. The discovery was reported in a poster by Gábor Marton, Csaba Kiss, and Thomas Mueller at the joint meeting of the European Planetary Science Congress and the Division for Planetary Sciences of the American Astronomical Society (DPS/EPSC) on Monday.

Pluto is not the end

One year after the New Horizons Pluto flyby, Emily reflects on its significance.

New Horizons Science Team Meeting Report

On July 6 at Lowell Observatory in Flagstaff, Arizona, the science team convened at the place where Pluto was discovered. Ted Stryk reports from the meeting.

A Moon for Makemake

The solar system beyond Neptune is full of worlds hosting moons. Now we know that the dwarf planet Makemake has one of its very own.

Clouds and haze and dust, oh my!

What types of aerosols do we find in the atmospheres around the Solar System, and why does what we call them—clouds vs. haze vs. dust—matter? Sarah Hörst explains.

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