Supermassive black holes, millions or billions of times the mass of our Sun, are found at the centers of almost every galaxy. Many of these black holes are surrounded by thick rings of gas and dust....
Gases around Black Holes Act Like Fountains, Study Finds
Supermassive black holes, millions or billions of times the mass of our Sun, are found at the centers of almost every galaxy. Many of these black holes are surrounded by thick rings of gas and dust....
Scientists spent years campaigning for a ban on the ozone-damaging chemical CFC-11, but 30 years after it was phased out in the 1987 Montreal Protocol, someone somewhere is breaking the rules. According to the National Oceanic and Atmospheric Adminis...
