감마선의 시사

과학동아 1988년 05호

field then becomes monstrously intense; a teaspoon of its matter weighs a million tons. Light itself can barely escape from it. Neutron stars were discovered only in 1969, and astronomers are certain they exist. The tiny stars turn rapidly, in periods that are anywhere from one turn per second to nearly 1,000 turns per second, and we can detect the radio pulses sent out with each turn. There ...