2023-11-08 20:19:21
Par Tristan Vey
Published 4 minutes ago, Updated now
The Perseus cluster is located 240 million light years away. ESA/Euclid/Euclid Consortium/NASA, image processing carried out by J.-C. Cuillandre (CEA Paris-Saclay), G. Anselmi
DECRYPTION – The first images from the space telescope have confirmed its ability to map billions of galaxies.
When the Hubble Space Telescope revolutionized astronomy in the 1990s, words were almost superfluous. The images spoke for themselves: we had simply never seen anything like this. The situation is a little more complicated today. Instruments have never been so powerful, but it’s not necessarily obvious at first glance.
The James Webb Space Telescope, for example, does not produce radically better images than its predecessor, but in a wavelength range that is more difficult to explore, and with additional sensitivity allowing it to see “further.” Not to mention his abilities to analyze light, allowing him to establish unrivaled “identity maps” of the sources he studies. In scientific terms, the gain is much greater than one could imagine by simply comparing the images produced.
The new European Euclid space telescope, launched this summer, faces the same…
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#Euclid #cosmological #revolution