Euclid I. Overview of the Euclid mission

Mellier, Y.; Abdurro’uf; Acevedo Barroso, J. A.; Achúcarro, A.; Adamek, J.; Adam, R.; Addison, G. E.; Aghanim, N.; Aguena, M.; Ajani, V.; Akrami, Y.; Al-Bahlawan, A.; Alavi, A.; Albuquerque, I. S.; Alestas, G.; Alguero, G.; Allaoui, A.; Allen, S. W.; Allevato, V.; Alonso-Tetilla, A. V.; Altieri, B.; Alvarez-Candal, A.; Alvi, S.; Amara, A.; Amendola, L.; Amiaux, J.; Andika, I. T.; Andreon, S.; Andrews, A.; Angora, G.; Angulo, R. E.; Annibali, F.; Anselmi, A.; Anselmi, S.; Arcari, S.; Archidiacono, M.; Aricò, G.; Arnaud, M.; Arnouts, S.; Asgari, M.; Asorey, J.; Atayde, L.; Atek, H.; Atrio-Barandela, F.; Aubert, M.; Aubourg, E.; Auphan, T.; Auricchio, N.; Aussel, B.; Aussel, H.; Avelino, P. P.; Avgoustidis, A.; Avila, S.; Awan, S.; Azzollini, R.; Baccigalupi, C.; Bachelet, E.; Bacon, D.; Baes, M.; Bagley, M. B.; Bahr-Kalus, B.; Balaguera-Antolinez, A.; Balbinot, E.; Balcells, M.; Baldi, M.; Baldry, I.; Balestra, A.; Ballardini, M.; Ballester, O.; Balogh, M.; Bañados, E.; Barbier, R.; Bardelli, S.; Baron, M.; Barreiro, T.; Barrena, R.; Barriere, J. C.; Barros, B. J.; Barthelemy, A.; Bartolo, N.; Basset, A.; Battaglia, P.; Battisti, A. J.; Baugh, C. M.; Baumont, L.; Bazzanini, L.; Beaulieu, J. P.; Beckmann, V.; Belikov, A. N.; Bel, J.; Bellagamba, F.; Bella, M.; Bellini, E.; Benabed, K.; Bender, R.; Benevento, G.; Bennett, C. L.; Benson, K.; Bergamini, P.; Bermejo-Climent, J. R. (2025-04-30)
 
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URL:
https://doi.org/10.1051/0004-6361/202450810

Mellier, Y.
Abdurro’uf
Acevedo Barroso, J. A.
Achúcarro, A.
Adamek, J.
Adam, R.
Addison, G. E.
Aghanim, N.
Aguena, M.
Ajani, V.
Akrami, Y.
Al-Bahlawan, A.
Alavi, A.
Albuquerque, I. S.
Alestas, G.
Alguero, G.
Allaoui, A.
Allen, S. W.
Allevato, V.
Alonso-Tetilla, A. V.
Altieri, B.
Alvarez-Candal, A.
Alvi, S.
Amara, A.
Amendola, L.
Amiaux, J.
Andika, I. T.
Andreon, S.
Andrews, A.
Angora, G.
Angulo, R. E.
Annibali, F.
Anselmi, A.
Anselmi, S.
Arcari, S.
Archidiacono, M.
Aricò, G.
Arnaud, M.
Arnouts, S.
Asgari, M.
Asorey, J.
Atayde, L.
Atek, H.
Atrio-Barandela, F.
Aubert, M.
Aubourg, E.
Auphan, T.
Auricchio, N.
Aussel, B.
Aussel, H.
Avelino, P. P.
Avgoustidis, A.
Avila, S.
Awan, S.
Azzollini, R.
Baccigalupi, C.
Bachelet, E.
Bacon, D.
Baes, M.
Bagley, M. B.
Bahr-Kalus, B.
Balaguera-Antolinez, A.
Balbinot, E.
Balcells, M.
Baldi, M.
Baldry, I.
Balestra, A.
Ballardini, M.
Ballester, O.
Balogh, M.
Bañados, E.
Barbier, R.
Bardelli, S.
Baron, M.
Barreiro, T.
Barrena, R.
Barriere, J. C.
Barros, B. J.
Barthelemy, A.
Bartolo, N.
Basset, A.
Battaglia, P.
Battisti, A. J.
Baugh, C. M.
Baumont, L.
Bazzanini, L.
Beaulieu, J. P.
Beckmann, V.
Belikov, A. N.
Bel, J.
Bellagamba, F.
Bella, M.
Bellini, E.
Benabed, K.
Bender, R.
Benevento, G.
Bennett, C. L.
Benson, K.
Bergamini, P.
Bermejo-Climent, J. R.
EDP sciences
30.04.2025

Euclid Collaboration, Mellier, Y., Abdurro’uf, Acevedo Barroso, J. A., Achúcarro, A., Adamek, J., Adam, R., Addison, G. E., Aghanim, N., Aguena, M., Ajani, V., Akrami, Y., Al-Bahlawan, A., Alavi, A., Albuquerque, I. S., Alestas, G., Alguero, G., Allaoui, A., Allen, S. W., … Zumalacarregui, M. (2025). Euclid: I. Overview of the Euclid mission. Astronomy & Astrophysics, 697, A1. https://doi.org/10.1051/0004-6361/202450810

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© The Authors 2025. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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doi:https://doi.org/10.1051/0004-6361/202450810
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202505213754
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Abstract

The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients, dark matter and dark energy, remains unknown. Euclid is a medium-class mission in the Cosmic Vision 2015–2025 programme of the European Space Agency (ESA) that will provide high-resolution optical imaging, as well as near-infrared imaging and spectroscopy, over about 14 000 deg2 of extragalactic sky. In addition to accurate weak lensing and clustering measurements that probe structure formation over half of the age of the Universe, its primary probes for cosmology, these exquisite data will enable a wide range of science. This paper provides a high-level overview of the mission, summarising the survey characteristics, the various data-processing steps, and data products. We also highlight the main science objectives and expected performance.
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