Four-image NAVCAM montage comprising images taken on 28 October. Credits: ESA/Rosetta/NAVCAM

CometWatch – 28 October

This four-image NAVCAM montage comprises images taken on 28 October – shortly before moving to the pre-lander delivery orbit – from a distance of 9.7 km from the centre of comet 67P/C-G, or roughly 7.7 km from the surface....

Four image NAVCAM mosaic comprising images taken on 26 October. Credits: ESA/Rosetta/NAVCAM

CometWatch – 26 October

This four-image NAVCAM mosaic comprises images taken on 26 October from a distance of 9.8 km from the centre of comet 67P/C-G – about 7.8 km from the surface. The corresponding image scale is about 66 cm/pixel,...

PIBS is an essential COSIMA subsystem. It was developed by Laboratoire de Physique et Chimie de l’Environnement et de l’Espace (LPC2E at CNRS/Université d’Orléans, France).  The two indium-115 sources were provided by Austrian teams in Seibersdorf (OFZS) and Graz (IWF). Image courtesy C. Briois

COSIMA detects sodium and magnesium in a dust grain cal...

Early in September we reported that Rosetta’s COSIMA instrument, the COmetary Secondary Ion Mass Analyser, had detected its first dust grains. Now some results from the first compositional analyses are in, as Martin Hilchenbach reports for the COSIMA...

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Rosetta enroute to pre-delivery orbit

Today's burn put Rosetta on a very elliptical trajectory rapidly moving the spacecraft away from the 10-km orbit. On 31 October, the mission control team will perform another manoeuvre to enter onto the pre-delivery orbit.

Four image NAVCAM montage comprising images taken on 24 October 2014. Credits: ESA/Rosetta/NAVCAM

CometWatch – 24 October

This four-image NAVCAM montage comprises images taken on 24 October from a distance of 9.8 km from the centre of comet 67P/C-G – about 7.8 km from the surface. The corresponding image scale is about 66 cm/pixel,...

Four image NAVCAM montage comprising images taken on 20 October 2014. Credits: ESA/Rosetta/NAVCAM

CometWatch – 20 October

This four-image NAVCAM montage comprises images taken on 20 October from a distance of 9.4 km from the centre of comet 67P/C-G – about 7.4 km from the surface. In this orientation the smaller lobe of the...

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Naming Site J – Update

We're one step closer to knowing the name of Philae's landing site. By the time the competition closed, we had received more than 8000 proposals for a new name for the location, currently known as Site J....

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 9.9 km from the centre of the comet.
Credits: ESA/Rosetta/NAVCAM

CometWatch – Cheops’ neighbours

This four-image NAVCAM montage comprises images taken on 18 October from a distance of 9.9 km from the centre of Comet 67P/C-G – about 7.9 km from the surface, not long after the image published Monday was...

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...