SpaceHow we could explore a black hole with an interstellar nanocraft An ambitious plan to test extreme physics close to a black hole would involve a space probe weighing only a few grams, travelling at a third of the speed of light 快猫短视频
SpaceA supermassive black hole is sending out a mysterious pulsing beat Regular pulses of X-ray radiation emanating from a supermassive black hole could be explained by a white dwarf star on the verge of falling in 快猫短视频