Astronomers have successfully observed the previouslyinvisible corona of a supermassive black hole located in the distant quasar RX J1131, about 6 billion light years from Earth. Using the Atacama ...

Not every infection with the coronavirus is over after a few days or weeks: Even in mild cases, people can still suffer from symptoms such as shortness of breath, fatigue or muscle weakness weeks ...

A rare spectacle was above the Twin Cities during Tuesday night's spectacular aurora borealis, as a "coronal aurora," typically reserved for the Arctic Circle, put on a show of brilliant colors.