OSIRIS image of Comet 67P/C-G on 10 September 2014, showing jets of cometary activity along almost the entire body of the comet.
Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/ INTA/UPM/DASP/IDA

Comet activity is on the increase

Comet 67P/Churyumov-Gerasimenko is showing a gradual, but clear, increase in activity, as can be seen in the latest images provided by the OSIRIS team. While images obtained a few months ago showed distinct jets of dust leaving...

High resolution mass spectrum of ROSINA DFMS, taken on October 10 at a distance of 10 km from the comet centre. Hydrogen sulphide is easily seen. The second peak is due to the heavier isotope of sulphur 34S, which is a fragment of all sulphur bearing species. Image courtesy K. Altwegg, University of Bern

The ‘perfume’ of 67P/C-G

With inputs from Kathrin Altwegg, ROSINA science team, University of Bern. Since early August, the Rosetta Orbiter Sensor for Ion and Neutral Analysis (ROSINA) has been ‘sniffing the fumes’ of 67P/C-G with its two mass spectrometers. As...

Comet 67P/C-G on 18 October, from a distance of 9.8 km from the centre of the comet. 
Credits: ESA/Rosetta/NAVCAM

CometWatch – 18 October

This four-image NAVCAM montage comprises images taken on 18 October from a distance of 9.8 km from the centre of comet 67P/C-G – about 7.8 km from the surface. The four 1024 x 1024 pixel images making...

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Klim Churyumov and Svetlana Gerasimenko: meet the disco...

Rosetta's comet was discovered in 1969 by two Ukranian astronomers, Klim Churyumov and Svetlana Gerasimenko, who first observed it from the Institute of Astrophysics in Alma-Ata (now named Almaty), Kazakhstan. To their delight, comet 67P/Churyumov-Gerasimenko was selected...

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CometWatch at 10 km

This four-image NAVCAM montage comprises images taken on 15 October from a distance of 9.9 km from the centre of comet 67P/C-G – just ~7.9 km from the surface! The orientation is such that we’re looking down...

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NAVCAM’s shades of grey

Ever since early August, when Rosetta rendezvoused with Comet 67P/Churyumov-Gerasimenko at a distance of roughly 100 km, the on-board navigation camera (NAVCAM) has been returning images that depict the many different facets of its nucleus. A complex...

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Name Site J!

ESA and its Rosetta mission partners are inviting you to suggest a name for the site where lander Philae will touch down on Comet 67P/Churyumov–Gerasimenko on 12 November. As the location of the first soft landing of...

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Landing sites from 30 km

With yesterday's announcement that Philae is ‘go’ for Site J, and the presentation of the new primary landing site mosaic, we can provide here the two images that make up the mosaic. The Site J images were taken...

Close-up of the region containing Philae’s primary landing site J. The mosaic comprises two images taken by Rosetta’s OSIRIS narrow-angle camera on 14 September 2014 from a distance of about 30 km. The image scale is 0.5 m/pixel and the image covers about 1 km square. The circle is centred on the landing site and is approximately 500 m in diameter.

Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

Green light for landing site J!

ESA has given the green light for its Rosetta mission to deliver its lander, Philae, to the primary site on 67P/Churyumov–Gerasimenko on 12 November.   The decision that the mission is ‘Go’ for...

Rosetta mission selfie a distance of about 16 km from the surface of 67P/C-G. Credits: ESA/Rosetta/Philae/CIVA

Mission selfie from 16 km

If you thought last month’s mission ‘selfie’ from a distance of 50 km from Comet 67P/C-G was impressive, then prepare to be wowed some more: this one was taken from less than half that distance, at just...

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CometWatch checks up on Cheops

This four-image NAVCAM montage comprises images taken on 8 October from a distance of 16.9 km from the centre of comet 67P/C-G, so roughly 15 km from the surface. The view covers the bottom and side of...