
The X-37B sits on top of an Atlas V rocket lifting off from Space Launch pad Complex-41, Cape Canaveral Air Force Station, Cape Canaveral, Florida, USA, 22 April 2010. EPA/JUSTIN DERNIER

The X-37B sits on top of an Atlas V rocket lifting off from Space Launch pad Complex-41, Cape Canaveral Air Force Station, Cape Canaveral, Florida, USA, 22 April 2010. The OTV, also known as the X-37B, supports space experimentation, risk reduction, and concept of operations development for long duration and reusable space vehicle technologies. EPA/JUSTIN DERNIER

The X-37B sits on top of an Atlas V rocket lifting off from Space Launch pad Complex-41, Cape Canaveral Air Force Station, Cape Canaveral, Florida, USA, 22 April 2010. The OTV, also known as the X-37B, supports space experimentation, risk reduction, and concept of operations development for long duration and reusable space vehicle technologies. EPA/JUSTIN DERNIER