Quasars are bright disks of gas and dust swirling around supermassive black holes. (sciencenews.org)
But with the moon blocking the sun's bright disk, the corona comes into view. (sciencenews.org)
«We thought that young stars, about 1 million years old, would have larger, brighter disks and that older stars from 10 million to 100 million years old would have fainter ones,» Rieke says. (discovermagazine.com)