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A collage of a telescope over a orange, star-filled sky Image - The STAR detector at the U.S. Department of Energy's Brookhaven National Laboratory. (Credit: Brookhaven National Laboratory) Photo – CERN's ATLAS detector undergoes upgrades in preparation for its next round of particle physics experiments, which is scheduled to begin in 2022. Photo - This half-meter-long prototype of a niobium-tin superconducting undulator magnet was designed and built by a team from three U.S. Department of Energy national laboratories. The next step will be to build a meter-long version and install it at the Advanced Photon Source at Argonne. (Credit: Ibrahim Kesgin/Argonne National Laboratory) Photo - This BELLA HTT laser system enables multipulse, high-energy-density photon sources for LaserNetUS and other experiments. (Credit: Berkeley Lab) Image - An ATLAS particle collision event display from 2018. (Credit: ATLAS collaboration) Image - A gravitational lens found in the DESI Legacy Surveys data. There are four sets of lensed images that correspond to four background galaxies, which appear as partial rings around an orange galaxy at the center and foreground. (Credit: DESI Legacy Imaging Surveys, Berkeley Lab, DOE, KPNO, CTIO, NOIRLab, NSF, AURA) Photo - Sam Barber, left, a research scientist at Berkeley Lab’s BELLA Center, and Jeroen van Tilborg, a staff scientist at the BELLA Center, hold the active plasma lens, right, and dipole magnets used in an electron-beam diagnostic experiment. Combined, the magnets allowed measurements of electron-beam energy, with range and resolution comparable to what is achieved using the multi-ton magnet located behind them. (Credit: Marilyn Sargent/Lawrence Berkeley National Laboratory) Image - An artistic rendering of the XMM-Newton (X-ray multi-mirror mission) space telescope. A study of archival data from the XMM-Newton and the Chandra X-ray space telescopes found evidence of high levels of X-ray emission from the nearby Magnificent Seven neutron stars, which may arise from the hypothetical particles known as axions. (Credits: D.Ducros; ESA/XMM-Newton, CC BY-SA 3.0 IGO) Screenshot - A spiral galaxy, viewed with the Sky Viewer tool. (Credit: DESI Legacy Imaging Surveys) Photo - Collage of three winners.