The Queen has highlighted probably the most essential fact when planning a trip into outer space – the importance of returning home.Experts and schoolchildren joined the Queen in a virtual event to mark British Science Week, showcasing the latest pictures from Nasa’s mission to Mars and classroom rockets made by the pupils.An image of the Winchcombe meteorite that recently fell to earth in the Gloucestershire town of the same name was shown to the Queen, who said: “I’m glad it didn’t hit anyone.”