A pair of American Vought F4U Corsair aircraft in flight during World War II.

UFO sightings by aircrews during World War II.

Eudimorphodon was a pterosaur that lived during the Triassic Period.

P-47 Thunderbolts attacking German Jagdpanther tanks during World War II.

P-47 Thunderbolts attacking German Jagdpanther tanks during World War II.

Flora & Fauna - line art - a 19th century engraving Animal - mammal - the class Aves Bird Willow Wren A small, primarily dark-brown song-bird that can be found from Canada to Tierra del Fuego at the southernmost tip of South America. During W. W. II and f

Flora & Fauna - line art - a 19th century engraving Animal - mammal - the class Aves Bird Yellow Wren A small, primarily dark-brown song-bird that can be found from Canada to Tierra del Fuego at the southernmost tip of South America. During W. W. II and f

Artist's concept of a space shuttle entering Earth orbit.

Space Shuttle backdropped against Earth.

Underside of helicopter during flight.