File:Comet 67P on 21 June 2015 – NavCam.jpg

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English: On 13 August 2015, Comet 67P/Churyumov–Gerasimenko will reach its closest point to the Sun along its 6.5-year long orbit. It will be around 185 million km from the Sun at ‘perihelion’, between the orbits of Earth and Mars.

ESA’s Rosetta mission reached the comet on 6 August 2014, and has been accompanying it ever since, monitoring the evolution of the nucleus and its surrounding atmosphere, or coma.

The nucleus is a mixture of frozen ices and dust. As the comet approaches the Sun, solar light warms its surface, causing the ices to boil away. This gas streams away carrying along large amounts of dust, and together they build up the coma.

This image was obtained with Rosetta’s navigation camera on 21 June 2015, when the spacecraft was 177 km from the comet centre.

Parts of the nucleus are lit by sunlight, revealing the variety of terrains that are found on this curious object. The diffuse luminosity, produced by the comet’s activity, is visible all around the nucleus, but appears especially striking in the upper part of the image.

The small lobe of this oddly shaped comet, visible at the top left in this orientation, is crowned by several jets of outflowing material, streaming into space from the surface.

Signs of activity are also visible around the ‘neck’ region that connects the two lobes, set against cliffs that are cast in shadow.

The comet’s large lobe, to the bottom right, reveals the rich morphology of the nucleus, with rugged terrains, circular features and smoother portions punctuated by boulders.

Rosetta will keep observing how the comet’s activity evolves in the lead up to perihelion, and for a full year after that, until the end of the mission in September 2016.
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Source https://www.flickr.com/photos/europeanspaceagency/19269965706/
Author ESA/Rosetta/NavCam – CC BY-SA IGO 3.0

Licensing[edit]
This photography is a Rosetta NAVCAM image created by the European Space Agency (ESA).
Their website states : "All Rosetta NAVCAM images are released under the Creative Commons Attribution-ShareAlike 3.0 IGO License. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as "ESA/Rosetta/NAVCAM, CC BY-SA IGO 3.0" as the source. A direct link to the license text is provided and that it is clearly indicated if changes were made to the original content. If any changes are made to the images, remix, translate or adaptation must be published under the same license terms (CC BY-SA 3.0 IGO) or a compatible license. You must also not give any suggestion that ESA necessarily endorses the modifications that you have made."
To the uploader: You must provide a link (URL) to the original file and the authorship information if available.
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This file is licensed under the Creative Commons Attribution-ShareAlike 3.0 IGO license.
Attribution: ESA/Rosetta/NAVCAM, CC BY-SA IGO 3.0
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This image was originally posted to Flickr by europeanspaceagency at https://www.flickr.com/photos/37472264@N04/19269965706. It was reviewed on 2015-07-13 00:52:23 by FlickreviewR, who found it to be licensed under the terms of the cc-by-sa-2.0, which is compatible with the Commons. It is, however, not the same license as given above, and it is unknown whether that license ever was valid.

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current11:10, 1 July 2015Thumbnail for version as of 11:10, 1 July 20151,024 × 1,024 (431 KB)Huntster (talk | contribs){{Information |Description={{en|1=On 13 August 2015, Comet 67P/Churyumov–Gerasimenko will reach its closest point to the Sun along its 6.5-year long orbit. It will be around 185 million km from the Sun at ‘perihelion’, between the orbits of Earth...

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