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CometWatch 22 August

Today's CometWatch entry, featuring a dramatic outburst from Comet 67P/Churyumov-Gerasimenko, was taken by Rosetta’s NAVCAM on 22 August 2015, about 336 km from the nucleus. The image scale is 28.6 m/pixel and the image measures 29.3 km...

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CometWatch 12 August – Animated

Today's CometWatch entry features three images taken over a forty-minute span on 12 August 2015, one day before the perihelion of Comet 67P/Churyumov-Gerasimenko. They were taken by Rosetta's NAVCAM at 336 km from the comet; the images...

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CometWatch 16 August

Today's CometWatch entry was taken three days after the perihelion of Comet 67P/Churyumov-Gerasimenko, on 16 August 2015. At the time, Rosetta was 331 km from the comet, which in turn was just over 186 million km from...

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What made the comet sing?

This blog post is contributed by Bárbara Ferreira, EGU Media and Communications Manager. Late last year the Rosetta Plasma Consortium (RPC) announced that Comet 67P/Churyumov-Gerasimenko, which ESA’s Rosetta spacecraft has been studying in detail since August 2014,...

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Do comet fractures drive surface evolution?

Extreme thermal stresses experienced by a comet as it orbits around the Sun could explain the extensive fracturing thought to drive its long-term surface erosion, say Rosetta scientists analysing high-resolution images of Comet 67P/Churyumov-Gerasimenko’s surface. The study,...

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New: Interactive viewer for comet 67P/C-G

In the week that we celebrate a year that Rosetta has been at Comet 67P/Churyumov-Gerasimenko and mark their passage through perihelion, we are delighted to present a new interactive tool that allows you to explore the shape...

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A shape model – what’s that?

Today, a new shape model of Rosetta’s comet is released by ESA. Some of you might immediately know what this is and how you might use it, and others will wonder ‘what’s that?’  This blog post, which...

A short-lived outburst from Comet 67P/Churyumov–Gerasimenko was captured by Rosetta’s OSIRIS narrow-angle camera on 29 July 2015. The image at left was taken at 13:06 GMT and does not show any visible signs of the jet. It is very strong in the middle image captured at 13:24 GMT. Residual traces of activity are only very faintly visible in the final image taken at 13:42 GMT. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

Comet’s firework display ahead of perihelion

This article is mirrored from the main ESA Web Portal. In the approach to perihelion over the past few weeks, Rosetta has been witnessing growing activity from Comet 67P/Churyumov–Gerasimenko, with one dramatic outburst event proving so powerful...

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CometWatch 6 August

Today's CometWatch entry is an image of Comet 67P/Churyumov-Gerasimenko taken on 6 August 2015, exactly a year to the day of Rosetta's historic rendezvous. The image was taken 261 km from the comet centre. Currently, the comet...

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Join our Perihelion Hangout!

Update from 14 August: you can watch a replay of the hangout here. --- Join us for a Google hangout with Rosetta mission experts to celebrate perihelion – the closest point to the Sun along the comet’s orbit....

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Amateur astronomers keeping an eye on the comet

This post is an interview with Padma A. Yanamandra-Fisher, a Senior Research Scientist at the Space Science Institute, USA, and the Rosetta Coordinator of Amateur Observations for 67P/C-G. Q: When did the amateur campaign to observe Rosetta's...

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Celebrating a year at the comet

This article is mirrored from the main ESA Web Portal ESA’s Rosetta mission today celebrates one year at Comet 67P/Churyumov–Gerasimenko, with its closest approach to the Sun now just one week away. It’s been a long but...

Comet 67P/C-G on 30 July (with contrasts enhanced) from a distance of 178 km. Credits: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0

CometWatch 30 July

Today’s spectacular CometWatch entry was taken by Rosetta’s NAVCAM on 30 July 2015 from a distance of 178 km from Comet 67P/Churyumov-Gerasimenko. The image scale is 15.2 m/pixel and the image measures 15.6 km across. Although the...

Rosetta's instruments. Credit: ESA/ATG medialab

First release of Rosetta comet phase data from four orb...

ESA’s Rosetta downlink and archive teams are very happy to announce the release today of the first wave of Rosetta instrument data from the “comet pre-landing phase” via the Planetary Science Archive. Data from four instruments are...

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”...