Enhanced NAVCAM image of Comet 67P/C-G taken on 24 April 2016, 28 km from the nucleus. The scale is 2.4 m/pixel and the image measures 2.4 km across. Credits: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0.

CometWatch 24 April

This week's CometWatch was taken by Rosetta's NAVCAM on 24 April 2016, 28 km from the nucleus of Comet 67P/Churyumov-Gerasimenko. It captures a beautiful ‘skyline’ taking in parts of the comet’s southern hemisphere regions. Bes and Geb...

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CometWatch 19 April

This week's CometWatch features an image obtained with Rosetta's NAVCAM on 19 April 2016, 29.4 km from the nucleus of Comet 67P/Churyumov-Gerasimenko. At these close distances, the comet nucleus overfills the field of view of the camera. In...

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Space science image of the week: Around Anuket

A recent NAVCAM image of Comet 67P-Churyumov Gerasimenko is featured as our ESA Space Science Image of the Week. Vaguely suggestive of a face immersed in deep thoughts, the image shows the rough landscape of Anuket, a...

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CometWatch 10 April

After a far excursion to explore the tail of Comet 67P/Churyumov-Gerasimenko, Rosetta is now back to closer distances from the comet nucleus. This week's CometWatch image was obtained with Rosetta's NAVCAM at 01:39 UTC on 10 April...

Rosetta NAVCAM image of Comet 67P/C-G taken on 4 April 2016 from a distance of 338 km. The image scale is 28.8 m/pixel and the image measures 29.5 km across. Credits: ESA/Rosetta/NavCam – CC BY-SA IGO 3.0

CometWatch 4 April

This week Rosetta has been moving back towards Comet 67P/Churyumov-Gerasimenko again following its far excursion in the anti-sunward direction to study the wider coma, tail and plasma environment. The spacecraft reached ~1000 km on 30 March and...

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CometWatch 27 March

Last week, Rosetta embarked on an excursion around 1000 km in the anti-sunward direction to study the wider coma, tail and plasma environment of Comet 67P/Churyumov-Gerasimenko. This week's CometWatch is an image taken on the outward leg...

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Communicating Astronomy with the Public: Rosetta specia...

We're delighted to announce a special issue of the "Communicating Astronomy with the Public" journal, which provides exclusive behind-the-scenes insights into the outreach surrounding the Rosetta Mission. Including articles written by ESA's communication team behind the competitions, cartoons, and social media campaigns, and reviews from external...

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CometWatch 19 March

This week’s CometWatch entry from Rosetta’s NAVCAM was taken on 19 March from a distance of just 12 km. It captures a beautiful oblique view across the plains of Imhotep, taking in the cluster of boulders to...

R-band mosaic of Comet 67P/C-G on 12 March 2016, taken with the 2.5m Isaac Newton Telescope on La Palma. The brightest part of the comet was imaged for 30 minutes, while the most distant parts of the dust trail required 1 hour of exposure. Credit: Isaac Newton Group/John Davies/Alan Fitzsimmons/Colin Snodgrass.

Comet’s dust trail stretches over 10 million km

Comet 67P/Churyumov-Geraimenko’s dust trail has been observed to stretch at least 10 million kilometres in the latest images taken by professional astronomers working on the ground-based observing campaign. The image mosaic shown here is composed of four...

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CometWatch 15 March

This week's CometWatch is an image taken by Rosetta's NAVCAM on 15 March, when the spacecraft was about 13 km from the nucleus of Comet 67P/Churyumov-Gerasimenko. The image shows a portion of the small comet lobe, centred...

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Rosetta finds magnetic field-free bubble at comet

This article is mirrored from the main ESA web portal.  ESA’s Rosetta spacecraft has revealed a surprisingly large region around its host comet devoid of any magnetic field. When ESA’s Giotto flew past Comet Halley three decades ago,...

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CometWatch 1 March

This week, CometWatch features an image of Comet 67P/Churyumov-Gerasimenko taken by Rosetta's NAVCAM on 1 March 2016, when the spacecraft was 26.7 km from the comet nucleus. With Rosetta back at close distances from the comet, NAVCAM...

Diversity of particles seen on a small area on one single target. This image section measures 2.5 mm across, with light coming from the right. Examples of a compact particle (a), a shattered cluster (b), a glued cluster (c) and a large rubble pile (d) are seen in this small area.
Credit: : ESA/Rosetta/MPS for COSIMA Team MPS/CSNSM/UNIBW/TUORLA/IWF/IAS/ESA/BUW/MPE/LPC2E/LCM/FMI/UTU/LISA/UOFC/vH&S/ Langevin et al (2016)

Profiling COSIMA’s dust grain family

Rosetta’s COSIMA instrument – the Cometary Secondary Ion Mass Analyser – has detected tens of thousands of dust grains since arriving at Comet 67P/Churyumov-Gerasimenko. The grains collected from 11 August 2014 – 3 April 2015 across nine...

Enhanced NAVCAM image of Comet 67P/C-G taken on 22 February 2016, 32.5 km from the nucleus. The scale is 2.8 m/pixel and the image measures 2.8 km across. Credits: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0

CometWatch February – Part 2

This week’s CometWatch entry pictures Comet 67P/C-G as seen with Rosetta’s NAVCAM on 22 February, from a distance of 32.5 km to the centre of the comet. At this close distance the comet nucleus overfills the camera’s...

Working map of Comet 67P/C-G identifying the approximate locations of the newly defined southern hemisphere regions. Credit: ESA/Rosetta/OSIRIS/El-Maarry et al (2016, in preparation)

Getting to know the comet’s southern hemisphere

Now that Rosetta has been able to safely approach Comet67P/Churyumov-Gerasimenko again following the active months around perihelion last August, scientists have been able to better image the southern hemisphere regions of the comet. This week the spacecraft...

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CometWatch February – part 1

This month, Rosetta is approaching Comet 67P/Churyumov-Gerasimenko at 40 km or less, returning beautiful views of the nucleus and its surface features. In today's CometWatch image, we see the comet pictured by Rosetta's NAVCAM on 10 February...