Several lesser-spotted stars and planets should be visible in the skies this May. File image: iStock/Getty

Named for the fleet-footed messenger of the gods, the planet Mercury can be equally tricky to catch during its brief trips out of the sun’s glare. Thi(...)

Albert Einstein. Photograph: Popperfoto/Getty Images

About one year ago a Twitter post dismissed something I wrote as a “typical contribution from an old white man”. This got me pondering the “dead white(...)

An immersive experience at the Peter Harrison Planetarium at the Observatory in Greenwich, London. Photograph: © National Maritime Museum, London

Travel broadens the mind, and what better way to see the big picture than a trip away to learn more about the Universe. If your journey takes you to L(...)

Brothers Cameron (left) and Tyler Winklevoss talk to each other as they attend a New York State Department of Financial Services (DFS) virtual currency hearing in New York in January. In a blog post, the Winklevoss brothers said they used bitcoins to buy tickets for a high-altitude voyage on billionaire Richard Branson’s Virgin Galactic commercial spaceflight venture. Photograph: Lucas Jackson/Reuters

You can’t spend bitcoins at Amazon. com or to pay your mortgage but, as the Winklevoss twins showed, you can use the digital currency to book a(...)