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NASA Honors Comet Science Pioneer Michael A'Hearn

NASA has posthumously awarded the Exceptional Public Service Medal to Michael A'Hearn, one of the world’s leading comet scientists. A'Hearn died May 29 at his home in University Park, Maryland at the age of 76.

Rosetta finds comet connection to Earth's atmosphere

The challenging detection, by ESA's Rosetta mission, of several isotopes of the noble gas xenon at Comet 67P/Churyumov-Gerasimenko has established the first quantitative link between comets and the atmosphere of Earth.

Rosetta's ongoing legacy

Rosetta’s operational mission ended in September 2016, but for the scientists and instrument teams the mission is far from over. Scientists have only scratched the surface analysing the amount of data produced by the mission. As this information is scrutinised, new discoveries are made, including a surprise final extra image taken by the OSIRIS camera during the spacecraft’s controlled descent onto the comet.

The 67P/Churyumov-Gerasimenko observation campaign in support of the Rosetta mission

We present a summary of the campaign of remote observations that supported the European Space Agency's Rosetta mission. Telescopes across the globe (and in space) followed comet 67P/Churyumov-Gerasimenko from before Rosetta's arrival until nearly the end of mission in September 2016.

Comet 67P Found to Be Producing Its Own Oxygen in Deep Space

The finding shows that oxygen can be generated in space without the need for life, and could influence how researchers search for signs of life on exoplanets.

Rosetta Infographic

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