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

Alone in space, but not lonely

Comet Leonard heads out to roam free in interstellar space, alongside rogue planets, their moons, and maybe even life.

Onward to 2022

Looking back at an amazing year in space, here on Earth and beyond.

Who loves the Sun?

Our host star takes center stage, and JWST demands a little more patience.

Do look up!

A comet, an eclipse, a meteor shower, and planets... all are amazing reasons to look up at the night skies.

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?

Rosetta’s Ancient Comet

Rosetta is a European Space Agency mission with contributions from its member states and NASA. Operating such a complex mission with its 11 instruments and Philae lander is a success story in itself, but Rosetta’s greatest success is the science it delivered.

Planetary discovery over the past quarter century

2016 marks the 25th anniversary of the creation of what has become one of the primary venues for the publication of research in planetary science: the Journal of Geophysical Research: Planets. This occasion is a good opportunity to look back at what we have learned in this era of expanded exploration and to try to take a peek at the future.

Rosetta in the Rearview: What Have We Learned?

Just over a month ago the European Space Agency’s Rosetta spacecraft finished its mission by spectacularly diving into the comet 67P/Churyumov-Gerasimenko. How did it observations influence and alter our ideas about the typical formation and lifetime of a comet?

Rosetta is gone

Today there is one less spacecraft returning science data from beyond Earth. The European Space Operations Centre received the final transmission from Rosetta at 11:19 September 30, UT.

Rosetta spacecraft may be dying, but Rosetta science will go on

The Rosetta mission will end tomorrow when the spacecraft impacts the comet. ESA took advantage of the presence of hundreds of members of the media to put on a showcase of Rosetta science. If there’s one thing I learned today from all the science presentations, it’s this: Rosetta data will be informing scientific work for decades to come.

Rosetta end-of-mission update

The European Space Agency has shared plans for the end of the Rosetta mission scheduled for September 30, just three weeks from now. The landing site will be located on the

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