SpaceHow lasers found gravitational waves – and could hunt for aliens Detecting gravitational waves is just the start, says Robert Byer: the next stops are giant space telescopes, satellite launchers and nuclear fusion power Features
LifeThere might be a planet better than Earth – right next door There should be worlds out there so balmy they make Earth look stale, and there are signs of one just four light years away. That's close enough to visit... Features