NPR News: 02-06-2025 3PM EST

263.43 - 286.097 Amy Held

Our universe has billions of galaxies, huge groups of stars and other matter glued together by gravity, thought to form and grow by collisions and mergers. What is really rare is for one galaxy to dive through the center of another. And the rings around this bullseye boost a long-established theory, NASA says. They appear to have moved outward almost exactly as models predicted. Amy Held, NPR News.