![]() When Euclid’s scientific team turned on the visible light instrument for the first time, they found that sunlight was leaking into its images. But beyond that, astronomers don’t know much about these mysterious cosmic components.Ī test image taken by Euclid's visible light instrument showing distant stars and galaxies.ĮSA / Euclid / Euclid Consortium / NASA, CC BY-SA 3.0 IGO Dark matter, meanwhile, makes up 27 percent of the universe and holds galaxies together. The goal is for these observations to help scientists better understand the “ dark universe.” Researchers have calculated that dark energy makes up about 68 percent of the cosmos and is responsible for accelerating the expansion of space. It’s an ideal place for a space-based observatory, in part because gravitational pulls of the Earth and sun balance out orbital forces, allowing spacecraft to stay in a fixed position while using limited amounts of fuel.įrom L2, Euclid will observe galaxies as far as ten billion light years away, scanning more than one-third of the sky. The James Webb Space Telescope is also in orbit around L2. The Euclid spacecraft, about 15 feet tall and 12 feet across, has spent the last several weeks traveling to the second Lagrange point, or L2, located more than 900,000 miles from Earth in the opposite direction from the sun. ![]() Those taken with the Near-Infrared Spectrometer and Photometer (NISP) will measure how much light galaxies emit at different wavelengths, which can reveal their distances from Earth, per the ESA statement. ![]() Images captured by Euclid’s visible instrument (VIS) will reveal the shapes of galaxies. The fully calibrated Euclid will ultimately observe billions of galaxies to create the biggest-ever 3D map of the sky.”Ĭapturing these test views of the cosmos used both of Euclid’s imaging instruments-one that observes in visible light and another that “sees” the longer wavelengths of infrared. “It’s even more incredible when we think that we see just a few galaxies here, produced with minimum system tuning. “After more than 11 years of designing and developing Euclid, it’s exhilarating and enormously emotional to see these first images,” Giuseppe Racca, Euclid’s project manager at the ESA, says in a statement from the agency. “Although these first test images are not yet usable for scientific purposes, I am pleased that the telescope and the two instruments are now working superbly in space,” Knud Jahnke, an astronomer at the Max Planck Institute for Astronomy in Germany and instrument scientist for the Euclid mission, says in a statement. Astronomers hope this data will shed light on the mysterious dark matter and dark energy that govern the cosmos. Launched on July 1 from Florida’s Cape Canaveral Space Force Station, the telescope will observe billions of galaxies to map how the universe has evolved over time. The pictures, filled with distant galaxies and bright stars, confirm Euclid’s instruments are functioning and provide a small glimpse of the scientific discoveries to come. From more than a million miles away, the European Space Agency’s (ESA) Euclid space telescope has sent its first stunning test images back to Earth. ![]()
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