If the Sun could suddenly collapse to a black hole, how would the period of Earth's revolution about it differ from what it is now? If the Sun could suddenly collapse to a black hole, how would the period of Earth's revolution about it differ from what it is now? The period would increase as the Earth will move slower around the black hole. The period would decrease as the Earth will move slower around the black hole. The period would decrease as the Earth will move faster around the black hole. The period would not change at all. The period would increase as the Earth will move faster around the black hole