i am outside where the event will be taking place this afternoon but there has been growing opposition from protesters, citing the legitimacy and the cost. and work begins to remove the tens of thousands of floral tributes left to honour the queen, in central london. in the last few hours nasa has successfully managed to test the world s first planetary defence system by deliberately crashing a spacecraft into an asteroid. the dart mission is the first ever attempt to change the course of a large object roughly the size of a football stadium. a live camera relayed the spacecraft s final few seconds to nasa scientists before it crashed into the rock.