In its series of photos of subjects in silhouette, The Big Picture included this spectacular image of the Solar Impulse plane during its successful 26-hour test flight last month.

A solar-powered plane with a 200-foot wingspan completed its first test flight this morning, soaring to 5,500 feet in an 87-minute sortie that reached a top speed of 44 mph. Solar Impulse proved itself airworthy, taking off and landing under...