A tiny delivery robot took a passerby by surprise by ‘politely thanking’ him for his help after it got stuck on an icy pavement. This week a passerby spotted a Starship food-delivery robot struggling to find a way up the large and icy curb in Cambridge. Graham Smith from Cherry Hinton in Cambridge, immediately came to the bot’s aid in Chequers Close on Tuesday. He said: ‘I... 

Using our current technology, it would take 180,000 years to reach Zarmina. But our resident physicist Dave Goldberg has a more optimistic estimate – thanks to antimatter and time dilation, astronauts could get there in just a few years. Dave calculates that, if we could build a stellar drive that gets its fuel from matter-antimatter explosions, then it would be possible to travel to Zarmina...