Collision is 'nice experiment' - but pay off will come later, says astronomer

The "big pay off" from the SpaceX rocket crashing into the Moon will come in around a week's time, according to an astronomer. Dr Matt Bothwell, astronomer at the University of Cambridge, tells BBC Breakfast this is when a lunar orbital satellite will pass the crash site and scientists will be able to create before and after pictures of the crater. Bothwell adds that the collision is a "nice little neat experiment on the Moon", but warns that space is becoming more crowded wi