Cosmology

Catchy, we gotta admit: In 1976, Hawking suggested that, as black holes evaporate, they destroy information about what had formed them. That idea goes against a fundamental law of quantum mechanics which states any process in physics can be mathematically reversed. In the 1960s, physicist John Archibald Wheeler, discussing black holes’ lack of observable features beyond their total mass, spin, and charge, coined the phrase “black holes have no hair”—known as the no-hair theorem. However, the newly discovered “quantum hair” provides a way for information to be preserved as a black hole collapses and, as such, resolves one of modern science’s most famous quandaries, experts say. Prof Calmet said: “Black holes have long been considered the perfect laboratory to study Read More ›