We’re excited to announce the finalists of Air & Space/Smithsonian magazine’s Fourth Annual Photo Contest. Our judges have selected 10 finalists in each of our four categories—Military, Civilian, Astronomy, and People & Planes—and now it’s up to you to determine the Readers’ Choice winner. The photograph that receives the most votes by 5 p.m. (EST), January 31, 2017, will receive $100 and be announced alongside our Grand Prize and category winners in our April/May issue, and online in late March 2017.

You can vote once in a 24-hour period, so come back and vote each day. When we announce the winners in March, we’ll also be opening up the Fifth Annual Photo Contest. So get ready to send us your best shots.

Finalists: Astronomy
Finalists: People & Planes
Finalists: Civilian
Finalists: Military