Babies get cranky for a number of different reasons. They may need a nap, some food, or just a good, old-fashioned burp. Babies often ... you just have to wait it out," Vallespir Ellett says.
"There are a lot of examples of black holes with single burps emanating out, but we discovered a galaxy with a supermassive black hole that has not one but two burps." The burp itself consists of ...