Developing antiviral therapeutics and vaccines requires close study of the viruses that cause disease. But how can these small germs be isolated from complex biological samples like saliva?
NASA created a haunting audio clip of sound waves rippling out of a supermassive black hole, located 250 million light-years away. The black hole is at the center of the Perseus cluster of galaxies, ...
When something vibrates, it can create sound waves. Sound waves can travel through solids like metal, liquids like water and gases like air. But they can’t travel through empty space which has nothing ...