What should we say to out intergalactic neighbours if they get in touch? That’s a question researchers at St Andrews in the UK are looking into. Expert Dr John Elliott says we need to be ready “for an event that could turn into reality as early as tomorrow and which we cannot afford to mismanage”. This isn’t entirely out of the blue – NASA and the US Department of Defense are investigating potential UFO sightings that officials have described as “frequent and ongoing”. There’s been 143 since 2004 which can’t be explained, and while a reason will be found for some, the experts say they need to keep up the work on those that can’t. So while we’re still not sure what’s out of this world, it’s some comfort that some talking points are being drawn up in case the day comes…