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The June Solstice 2019 Issue of The Planetary Report Is Out!

Emily Lakdawalla • June 10, 2019

Two feature articles bring you the excitement and science of exploring two very different representatives of the solar system's smaller worlds.

Rosetta’s Ancient Comet

The Planetary Report • June Solstice 2019

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.

Feast your eyes on comet 67P's surface, with depth cues added

Mattias Malmer • September 14, 2018 • 3

Mattias Malmer made it a little easier to figure out what Philae really saw in 2014.

Philae science results: Comet 67P is crunchy on the outside, soft on the inside

Emily Lakdawalla • May 09, 2018 • 1

What is the surface of a comet like? That's one of the main questions that motivated Philae's mission to the surface of comet 67P/Churyumov-Gerasimenko. We now know the comet has a rigid crust about 10 to 50 centimeters thick, below which the comet is much more fluffy.

Ten times the solar system reminded us sample collection is hard

Emily Lakdawalla • February 19, 2018 • 3

Some of the biggest discoveries we make in planetary science rely on the seemingly simple act of picking up and analyzing pieces of other worlds. When things go awry, scientists and engineers can sometimes squeeze amazing science out of a tough situation.

Citizen scientist spots changes on Rosetta's comet

Marco Parigi • February 27, 2017 • 3

Citizen scientist and self-described "comet whisperer" Marco Parisi explains how he made a striking discovery on Comet 67P using Rosetta mission data.

Planetary discovery over the past quarter century

Steven Hauck • December 20, 2016 • 1

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?

John Noonan • November 07, 2016 • 1

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

Emily Lakdawalla • September 30, 2016 • 6

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

Emily Lakdawalla • September 29, 2016 • 3

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.

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