When we measure the rate at which the universe expands, our two answers don't match. One scientist says its because we're in a Hubble Bubble. Find out more. (4:00 min read)
Betelgeuse was dimming over the holidays, leading stargazers to speculate about a supernova. Find out why none of us will live to see it. (3:30 min read)
Learn what researchers have discovered about the origins of the heavy chemical elements thoughout the universe and here on earth.