Origins of Life on Earth by Thomas Sullivan (USA, aged 13). Earth and space are evenly weighted in this wonderfully framed image of a Californian landscape beneath the Milky Way. The young photographer has chosen a view of an ancient Bristlecone Pine which is over 4000 years old, and whose sloping trunk and gnarled branches provide perfect counterpoint to the edge-on view of the starry disc and knotted structure of our galaxy.Picture: Thomas Sullivan