COBS NEWS Archive

Sep. 23, 2016

CometWatch – 31 August & 11 September

This week's CometWatch entry is a double feature, with two images of Comet 67P/Churyumov-Gerasimenko from Rosetta's NAVCAM taken on 31 August and 11 September 2016, when the spacecraft was 8.8 and 9.8 km, respectively, from the centre of the comet nucleus.

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Sep. 23, 2016

Beginning of the end

Today's blog post features detailed information on the intense, behind-the-scenes activities during Rosetta's final weeks, courtesy of Sylvain Lodiot, Spacecraft Operations Manager, at ESOC, and Laurence O'Rourke, Rosetta Science Ground Segment – Science Operations Coordinator, at ESAC.

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Sep. 12, 2016

Rosetta’s descent towards region of active pits

Squeezing out unique scientific observations until the very end, Rosetta’s thrilling mission will culminate with a descent on 30 September towards a region of active pits on the comet’s ‘head’.

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Sep. 12, 2016

The great pit of Deir el-Medina

On 30 September, Rosetta will descend towards a smooth region in Ma’at, on the smaller of the two lobes of Comet 67P/Churyumov-Gerasimenko. It will target a region that is home to several active pits measuring over 100 m wide and over 50 m deep, with the hope to get some close-up glimpses of these fascinating features.

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Sep. 09, 2016

Rosetta catches dusty organics

Rosetta’s dust-analysing COSIMA (COmetary Secondary Ion Mass Analyser) instrument has made the first unambiguous detection of solid organic matter in the dust particles ejected by Comet 67P/Churyumov-Gerasimenko, in the form of complex carbon-bearing molecules.

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Sep. 05, 2016

Philae found!

Less than a month before the end of the mission, Rosetta’s high-resolution camera has revealed the Philae lander wedged into a dark crack on Comet 67P/Churyumov–Gerasimenko.

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Sep. 04, 2016

CometWatch 22 August

This week’s CometWatch entry was taken with Rosetta’s NAVCAM on 22 August 2016, when the spacecraft was 6.8 km from the centre of Comet 67P/Churyumov-Gerasimenko.

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Aug. 22, 2016

The comet that disappeared: What happened to Ison?

Comet ISON, a bright ball of frozen matter from the earliest days of the universe, was inbound from the Oort Cloud at the edge of the solar system and expected to pierce the Sun's corona on November 28. Scientists were expecting quite a show. A new study suggests the comet actually broke up before reaching the sun.

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Aug. 16, 2016

CometWatch – early August round-up

Today’s CometWatch entry features a new image from Rosetta’s NAVCAM (below) along with a round-up of images released from the OSIRIS narrow- and wide-angle cameras in the last week.

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Aug. 09, 2016

CometWatch 6 August – Two years on

Two incredible years have passed since ESA’s comet-chaser Rosetta arrived at Comet 67P/Churyumov-Gerasimenko on 6 August 2014.

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