Did the Milky Way and the Andromeda Galaxy collide about 10 billion years ago - and consequently, is our current understanding of gravity fundamentally wrong? With astronomer Hongsheng Zhao from University of St Andrews.
Did the Milky Way and the Andromeda Galaxy collide about 10 billion years ago - and consequently, is our current understanding of gravity fundamentally wrong? With astronomer Hongsheng Zhao from University of St Andrews.