While dark matter and dark energy are in center focus for the Euclid Space Telescope, 5 new images of the cosmos taken by it reveal astonishingly wide possibilities for science.
Euclid Space Telescope, developed by the European Space Agency and the Euclid Consortium, was launched on 1 July 2023 from Cape Canaveral in Florida.
“It’s absolutely amazing. I’ve worked with Euclid for a long time, around a third of my career, and we had detailed simulations of what to expect. But, I have to say, these new images are just so much more than I ever expected. These are the largest images of the universe ever taken from space, covering large swathes of the sky in fine detail.
“The strongest way to measure dark energy and dark matter is not by using the big arcs of galaxies, but by using the tiny distortions of every single galaxy in Euclid’s wide field of view. You need to have 1.5 billion to 2 billion galaxies and average them together to work out whether there’s a residual shape in that part of the sky, which the dark matter is causing the distortion. Euclid needs to see so much sky because these distortions are tiny,” explained Cropper.
“To achieve its core aim of better understanding dark energy and dark matter, Euclid’s measurements need to be exquisitely precise. This requires a camera that is incredibly stable and incredibly well understood, with conditions inside it that need to be controlled very carefully. The camera we developed will not only contribute beautiful images but help us answer fundamental questions about the role of dark energy and dark matter in the evolution of the universe,” added Cropper.
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