To no one's surpise, the fifth annual Air & Space photo contest produced some real gems.

Our judges selected 10 finalists in each of four categories—Military, Civilian, Astronomy, and People & Planes. They appear here along with descriptions supplied by the photographers. Winners in each category, as well as a Grand Prize winner and a Readers’ Choice winner, were announced in March 2018, and can be seen here.

Thanks to all who sent in photographs or participated by voting!