ESA

Euclid Q1 special issue of Astronomy & Astrophysics

Consortium, ESA, Publication, Science / By

All results from the Euclid mission as well as a lot of reports, tests, and predictions are published as peer reviewed articles in scientific journals. The vast majority of almost 300 papers written by Euclid Consortium and ESA members so far were sent for publication in ‘Astronomy & Astrophysics’. Now an A&A ‘Special Issue’ collectively publishes 41 Euclid articles from last year’s data relase Q1.

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Euclid Q1 special issue of Astronomy & Astrophysics Read More »

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Behind the scenes: Euclid Galactic Bulge Survey (Q2)

Consortium, ESA, People, Publication, Science, Telescope and instruments / By

On 23 March 2025, the Euclid space telescope targeted an unusual location: a region near the Galactic Centre, capturing an exceptionally deep, wide-field, and high-resolution view of the Milky Way’s inner bulge. Over roughly 24 hours, the telescope observed nine contiguous fields, covering a total of 4.8 square degrees, capturing the images of roughly 60 million stars in total. Now the images and catalogues are made public to the world – we take the opportunity to peek behind the curtain to see what makes this image so special and which challenges had to be overcome.

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Behind the scenes: Euclid Galactic Bulge Survey (Q2)Read More »

Behind the scenes: Euclid Galactic Bulge Survey (Q2) Read More »

Euclid and HST join forces to look at a Cat’s Eye

Consortium, ESA, Science, Telescope and instruments / By

Euclid covers a much larger area in every image compared to previous space telescopes, all while resolving details. The Hubble Space Telescope has a roughly 2x larger mirror than Euclid and can still resolve structures twice as fine, but over a much smaller area: It could in principle carry out Euclid’s Wide Survey, but it would take 100s of years instead of only six. So what happens when combining Hubble’s eye for detail and Euclid’s field of view? Something incredible is the result.

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Euclid and HST join forces to look at a Cat’s EyeRead More »

Euclid and HST join forces to look at a Cat’s Eye Read More »

Euclid’s view of the ‘Morphological Tuning Fork’ of galaxy classifications

Consortium, ESA, Publication, Science / By

In March 2025 ESA and the Euclid Consortium released the first 63 square degrees of calibrated Euclid science images and catalogues, the Q1 release. At the same time, a set of descriptive technical articles and first scientific papers were released to the public. A second set of publications is now ready and has just been released – the EC issued a press release on this.

We have been using this occasion to dip into the more than 20 million galaxies observed for the Q1 release to re-construct a very classical display of extragalactic astronomy: the so-called ‘Morphological Tuning Fork’ – as seen by Euclid.

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Euclid’s view of the ‘Morphological Tuning Fork’ of galaxy classificationsRead More »

Euclid’s view of the ‘Morphological Tuning Fork’ of galaxy classifications Read More »

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