The first close-up images of the gigantic star RW Cephei explain why it appeared to mysteriously grow dimmer in recent years before brightening once more.
A colossal star erupts: Examining one of the largest stars in the Milky Way as it fades from view phys.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from phys.org Daily Mail and Mail on Sunday newspapers.