In a first, scientists took the temperature of a sonic black hole
Lab experiments characterize a phenomenon predicted by cosmologist Stephen Hawking
![black hole](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/05/052819_ec_black-hole_feat.jpg?fit=860%2C460&ssl=1)
NOT BLACK Stephen Hawking first proposed that black holes (illustrated) aren’t fully black, but emit a faint haze of particles that came to be known as Hawking radiation. Now scientists have measured the radiation’s temperature in a lab analog of a black hole.
NASA’s Goddard Space Flight Center; Background: DPAC/Gaia/ESA