The universe is full of mysteries, but its age isn’t one of them. That’s because the universe left behind a huge number of clues as to its age — including the observed age of the oldest stars; the rate of expansion of the universe; and the background heat...
Little more than a week had passed since Independence Day celebrations, but the crowd that had gathered at NASA’S Goddard Space Flight Center in Greenbelt, Maryland was as excited as any audience at a fireworks display. They were there because the James Webb...
