Ten teams of year 7 & 8 students battled it out for the title of best rocket scientist, in the inaugural NZ Rocketry Challenge on Sunday, at Ambury Regional Park in Auckland. Cheered on by a 150-strong crowd, these junior rocket engineers launched a raw hen's egg high into the air. To win, they needed to fly to a specific altitude, and their 'eggstronaut' had to come back safely and undamaged.