Images taken by Philae’s ROsetta Lander Imaging System, ROLIS, trace the lander’s descent to the first landing site, Agilkia, on Comet 67P/Churyumov–Gerasimenko on 12 November 2015.
Credits: ESA/Rosetta/Philae/ROLIS/DLR

Science on the surface of a comet

Complex molecules that could be key building blocks of life, the daily rise and fall of temperature, and an assessment of the surface properties and internal structure of the comet are just some of the highlights of...

Screenshot from a simulation of plasma interactions between Comet 67P/C-G and the solar wind around perihelion. 
Credit: Modelling and simulation: Technische Universität Braunschweig and Deutsches Zentrum für Luft- und Raumfahrt; Visualisation: Zuse-Institut Berlin

Rosetta shows how comet interacts with the solar wind

This blog post is based on the papers “Evolution of the ion environment of comet 67P/Churyumov-Gerasimenko: Observations between 3.6 and 2.0 AU ” by H. Nilsson et al.; “Rosetta observations of solar wind interaction with the comet 67P/Churyumov-Gerasimenko”...

Comet 67P/C-G on 20 July 2015. Credits: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0

CometWatch 20 July

Today’s CometWatch entry was captured by Rosetta’s NAVCAM on 20 July 2015 from a distance of 171 km from the centre of Comet 67P/Churyumov-Gerasimenko. The image scale is 14.5 m/pixel and the image measures 14.9 km across. Although...

Recent image from the 2 m Liverpool Telescope, taken on the morning of 19 July 2015. It comprises 10 x 20s r-band images. The length of the tail visible in the image in the twilight sky is approximately 120,000 km.
Credit: Colin Snodgrass / Geraint Jones / Liverpool Telecope

Chasing a comet from Earth – update on the professional...

An interview with Colin Snodgrass of the Open University, UK, who coordinates a consortium of professional astronomers observing Comet 67P/Churyumov-Gerasimenko from Earth in support of the Rosetta mission. Q: Rosetta has been 'living' with Comet 67P/Churyumov-Gerasimenko for...

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Video report: Rosetta orbiter science

It is almost a year since the Rosetta spacecraft began orbiting comet 67P/Churyumov-Gerasimenko on 6 August 2014. The orbiter’s eleven instruments are studying the comet at different wavelengths - infrared, ultraviolet, microwave and radio – as well...

Enhanced view of Comet 67P/C-G on 14 July 2015. Credits: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0

CometWatch 14 July

Today’s CometWatch entry was captured by Rosetta’s NAVCAM on 14 July 2015 from a distance of 161 km from the centre of Comet 67P/Churyumov-Gerasimenko. The image scale is 13.7 m/pixel and the image measures 14 km across. It...

Geological mapping of the Imhotep region on Comet 67P/Churyumov–Gerasimenko.Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

Inside Imhotep

Imhotep, on Comet 67P/Churyumov-Gerasimenko's large lobe, is one of the most geologically diverse regions observed by Rosetta. This blog post presents the results of a new paper by Anne-Thérèse Auger from the Laboratoire d'Astrophysique de Marseille (LAM,...

The Philae Ground Reference Model. Credits: DLR.

Rosetta and Philae status update

Over the last few weeks, Rosetta has been flying along the terminator plane of Comet 67P/Churyumov-Gerasimenko, at distances from 180 km down to 153 km and at latitudes between 0 and 54 degrees, in order to find...

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Getting to know Rosetta’s comet: boundary conditions

In January the first maps of Comet 67P/Churyumov-Gerasimenko were published, identifying 19 geomorphologically distinct regions on its surface. Six months on and much more work has been done on refining the boundaries between these regions. This blog...

Comet 67P/C-G on 7 July 2015. Credits: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0

CometWatch 7 July

Today’s CometWatch entry was taken on 7 July, from a distance of 154 km from Comet 67P/Churyumov-Gerasimenko. The image resolution is 13.1 m/pixel and the image measures 13.4 km across. The image has been processed to bring...

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Claudia Alexander (1959–2015)

It is with great sadness that we share the news of Dr Claudia Alexander’s passing on 11 July 2015. Claudia worked for NASA at JPL. She was an eminent planetary scientist and was deeply involved with the...

After careful image processing dwarf planet Pluto shows itself in these images obtained by Rosetta’s scientific imaging system OSIRIS on 12 July 2015. Left: The unprocessed image is obscured by dust grains in comet 67P’s coma. Middle: Pluto’s background of stars as seen from Rosetta. Right: The processed image shows Pluto as a bright spot within the blue circle.
Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

Hello, Pluto!

Images obtained by OSIRIS, Rosetta’s scientific imaging system, show dwarf planet Pluto shortly before the flyby of NASA's New Horizons.  On Sunday 12 July 2015, OSIRIS, the scientific imaging system on board ESA’s spacecraft Rosetta, took a...

NAVCAM image of Comet 67P/C-G taken on 25 June 2015, 168 km from the comet centre. Credits: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0

CometWatch 25 June

Today’s CometWatch entry presents an image taken on 25 June from a distance of 168 km from the comet centre. The image scale is 14.3 m/pixel and the image measures 14.6 km across. The image has been...

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CometWatch 24 June

Today's CometWatch entry was taken on 24 June, when Rosetta was 183 km from the comet Comet 67P/Churyumov-Gerasimenko. This single frame NAVCAM image has a resolution of 15.6 m/pixel and it measures 16.0 km across. The view...