Andre Brahic, one of the people who discovered the rings of Neptune, has died aged 73, his publisher says.
According to a new study, our system was once home to a fifth gas giant that suddenly vanished some 4 billion years ago after a run-in with Neptune.
Andre Brahic, one of the people who discovered the rings of Neptune, has died aged 73, his publisher says.
According to a new study, our system was once home to a fifth gas giant that suddenly vanished some 4 billion years ago after a run-in with Neptune.
