Artist’s impression showing how    a very distant quasar powered by a supermassive black hole may look close up. Photograph: PA

The sequence of events leading to the creation of massive black holes in the universe has been discovered by astrophysicists including two researchers(...)

Last man on the moon: US astronaut Eugene Cernan, who died last week,   in 1972. Photograph: Nasa/EPA

The apparently positive relationship between US president Donald Trump and Russian premier Vladimir Putin could potentially herald an era of greater c(...)