File:What Euclid will measure- baryonic acoustic oscillations ESA24866727.png
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[edit]DescriptionWhat Euclid will measure- baryonic acoustic oscillations ESA24866727.png |
English: To understand more about the dark Universe, ESA’s Euclid will measure a phenomenon known as ‘baryonic acoustic oscillations’ that affect the distribution of galaxies on a very large scale. When the early Universe first expanded, the formation of protons and neutrons created sound waves (bubbles) that rippled through the hot particle-radiation soup. About 300 000 years after the Big Bang, when the Universe had cooled down enough for atoms to form and light to travel freely, these waves froze in place. Over time, slightly more galaxies formed in clusters along the frozen ripples. The ripples stretched as the Universe expanded, increasing the distance between galaxies. Scientists refer to these ripples in the large-scale distribution of galaxies as baryonic acoustic oscillations. ESA’s Euclid will study the distribution of galaxies over immense distances, teasing out these ripple patterns and determining their size. This enables us to measure accurately the rate of accelerated expansion of the Universe over time and teach us about the nature of dark energy and dark matter. Euclid is a European mission, built and operated by ESA, with contributions from NASA. The Euclid Consortium is responsible for providing the scientific instruments and scientific data analysis. ESA selected Thales Alenia Space as prime contractor for the construction of the satellite and its service module, with Airbus Defence and Space chosen to develop the payload module, including the telescope. NASA provided the detectors of the Near-Infrared Spectrometer and Photometer, NISP. Euclid is a medium-class mission in ESA’s Cosmic Vision Programme. |
Date | 16 May 2023 (upload date) |
Source | What Euclid will measure: baryonic acoustic oscillations |
Author | European Space Agency |
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Activity InfoField | Space Science |
Mission InfoField | Euclid |
Set InfoField | Euclid |
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[edit]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: ESA (acknowledgement: work performed by ATG under contract to ESA), CC BY-SA IGO 3.0
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current | 02:00, 16 May 2023 | 8,000 × 4,500 (12.63 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2023/05/what_euclid_will_measure_baryonic_acoustic_oscillations/24866716-6-eng-GB/What_Euclid_will_measure_baryonic_acoustic_oscillations.png via Commons:Spacemedia |
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