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Together, dark matter and dark energy comprise 95% of the known universe, yet scientists don’t know what they are. The Euclid telescope, set to launch to space from Florida on Saturday, may help decipher them.
Here’s what you need to know about the world’s newest space telescope.
What is Euclid?
Euclid is a space telescope that will observe the universe at infrared wavelengths. Its primary goal is to map the geometry of the dark universe—hence its name, for the Greek astronomer who dreamt up the foundations of modern geometry in the 3rd century BCE.
Euclid’s wavelength range is 1.1 to 2 microns, firmly in the near-infrared realm. As a relevant aside, the Webb Space telescope also images at near-infrared wavelengths, but is looking for very different things.
The spacecraft has two scientific instruments: a visible light camera (or VIS) and its near-infrared camera and spectrometer (NISP). Its image quality will be at least four times sharper than ground-based surveys of the sky, according to a European Space Agency release.
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An artist’s impression of the Euclid spacecraft. Illustration: ESA/C. Carreau
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