The mission could help scientists get a little closer to solving the twin mysteries of dark matter and dark energy.
Following blastoff, Euclid will take about 30 days to reach its operational orbit around Lagrange Point 2 , an area a million miles toward the outer solar system where Euclid can maintain a constant position relative to Earth.
”Those are the two ingredients that have sculpted the universe that we know,” Winslow says. Dark energy drives, while “in the early universe, it was this cold dark matter that pulled visible matter that we see now into potential wells, that then allowed it to contract and form galaxies and stars.” To hunt for that evidence, Euclid will use a technique known as weak gravitational lensing. This is similar to the strong gravitational lensing technique, where the mass of a foreground object, such as a galaxy cluster, is used to magnify a more distant background object. With weak gravitational lensing, scientists are more interested in the way the mass of the foreground objects, including dark matter, creates subtle distortions in the shape of background galaxies.
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