A Giant Leap for Astronomy: Telescope for NASA’s Roman Mission Complete
NASA's Roman Space Telescope has received its Optical Telescope Assembly, paving the way for its mission to explore the ...
First-Ever ‘Einstein Zig-Zag’ Found in Space Could Help Solve the Universe’s Expansion Mystery
A compound lens forged by two galaxies is helping astronomers get a bead on the Hubble Constant and dark energy.