Cosmologists are grappling with a major unresolved puzzle: they do not all agree on how fast the universe is expanding, and solving this puzzle could point to new physics. To check for hidden errors in traditional measurements that rely on…
Cosmologists are grappling with a major unresolved puzzle: they do not all agree on how fast the universe is expanding, and solving this puzzle could point to new physics. To check for hidden errors in traditional measurements that rely on…