Scent of a Comet

Image taken on 26 September from a distance of 26.3 km from Comet Chury. The image shows the spectacular region of activity at the «neck» of the comet with ices sublimating and gases escaping from inside the comet. Credit: ESA/Rosetta/NAVCAM

Image taken on 26 September from a distance of 26.3 km from Comet Chury. The image shows the spectacular region of activity at the «neck» of the comet with ices sublimating and gases escaping from inside the comet. Credit: ESA/Rosetta/NAVCAM

How does a comet smell and what can it teach us about the emergence of our solar system? Since early August, the Rosetta Orbiter Sensor for Ion and Neutral Analysis (ROSINA) has been “sniffing” the fumes of the comet Churyumov-Gerasimenko with its two mass spectrometers to answer these very questions. The detected chemistry in the coma of the comet is surprisingly rich at more than 400 million kilometers from the Sun.  Read More →