File:First detection of carbon dioxide at a comet ESA16507500.jpeg
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[edit]DescriptionFirst detection of carbon dioxide at a comet ESA16507500.jpeg |
English: In late March 2015, Rosetta’s visible, infrared and thermal imaging spectrometer, VIRTIS, detected a very large patch of carbon dioxide ice in Anhur, a region on the southern hemisphere of Comet 67P/Churyumov–Gerasimenko. This is the first detection of solid carbon dioxide at any comet. The 80 x 60 m patch – almost the size of a football field – was observed on two consecutive days in March. However, when the team looked at that region again around three weeks later, it was gone. The graphic shows the comet images and spectra taken by VIRTIS on 21–22 March, with the unmistakable signature of carbon dioxide ice: a series of three absorption lines at wavelengths around 2 microns, and two additional absorption lines at 2.7 and 2.78 microns. These characteristic features are not present in the spectrum of water ice. Analysis of the data reveal that the 9 cm-thick layer consists of a few percent of carbon dioxide ice mixed with a darker blend of dust and organic material. The data suggest that the grains of ice and darker material are separate (and not mixed) in the mixture. Later images and spectra, taken by VIRTIS on 12–13 April, show that the signature of carbon dioxide ice had disappeared. For more information see: Icy surprises at Rosetta's comet |
Date | 17 November 2016 (upload date) |
Source | First detection of carbon dioxide at a comet |
Author | European Space Agency |
Activity InfoField | Space Science |
Mission InfoField | Rosetta |
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This media was created by the European Space Agency (ESA).
Where expressly so stated, images or videos are covered by the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence, ESA being an Intergovernmental Organisation (IGO), as defined by the CC BY-SA 3.0 IGO licence. The user is allowed under the terms and conditions of the CC BY-SA 3.0 IGO license to Reproduce, Distribute and Publicly Perform the ESA images and videos released under CC BY-SA 3.0 IGO licence and the Adaptations thereof, without further explicit permission being necessary, for as long as the user complies with the conditions and restrictions set forth in the CC BY-SA 3.0 IGO licence, these including that:
See the ESA Creative Commons copyright notice for complete information, and this article for additional details.
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![]() ![]() ![]() This file is licensed under the Creative Commons Attribution-ShareAlike 3.0 IGO license. Attribution: Data: ESA/Rosetta/VIRTIS/INAF-IAPS/OBS DE PARIS-LESIA/DLR; Reprinted with permission from G. Filacchione et al., Science 10.1126/science.aag3161 (2016); context image: ESA/Rosetta/NavCam –, CC BY-SA IGO 3.0
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current | 20:07, 11 June 2020 | ![]() | 5,333 × 3,333 (2.97 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2016/11/first_detection_of_carbon_dioxide_at_a_comet/16507490-1-eng-GB/First_detection_of_carbon_dioxide_at_a_comet.jpg via Commons:Spacemedia |
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