File:Rosetta uncovers processes at work in comet’s coma ESA15417542.jpeg
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DescriptionRosetta uncovers processes at work in comet’s coma ESA15417542.jpeg |
English: Rosetta’s continued close study of Comet 67P/Churyumov–Gerasimenko has revealed an unexpected process at work close to the comet nucleus that causes the rapid breakup of water and carbon dioxide molecules. First, an ultraviolet photon from the Sun hits a water molecule in the comet’s coma and ionises it, knocking out an energetic electron. This electron then hits another water molecule in the coma, breaking it apart into two hydrogen atoms and one oxygen, and energising them in the process. These atoms then emit ultraviolet light that is detected at characteristic wavelengths by Rosetta’s Alice instrument. Similarly, it is the impact of an electron with a carbon dioxide molecule that results in its break-up into atoms and the observed carbon emissions. Full story: Ultraviolet study reveals surprises in comet coma |
Date | 2 June 2015 (upload date) |
Source | Rosetta uncovers processes at work in comet’s coma |
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: Spacecraft: ESA/ATG medialab; comet, left: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA; comet, top right: ESA/Rosetta/NavCam –; data: Feldman et al (2015)., CC BY-SA IGO 3.0
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current | 21:09, 11 June 2020 | 8,000 × 4,500 (5.98 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2015/06/rosetta_uncovers_processes_at_work_in_comet_s_coma/15417533-1-eng-GB/Rosetta_uncovers_processes_at_work_in_comet_s_coma.jpg via Commons:Spacemedia |
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