A dragonfly is a flying insect belonging to the infraorder Anisoptera below the order Odonata. About 3,000 extant species of true dragonfly are known. Most are tropical, with fewer species in temperate regions. Loss of wetland habitat threatens dragonfly populations around the world. Adult dragonflies are characterized by a pair of large, multifaceted compound eyes, two pairs of strong, transparent wings, sometimes with coloured patches, and an elongated body. Many dragonflies have brilliant iridescent or metallic colours produced by structural colouration, making them conspicuous in flight. An adult dragonfly's compound eyes have nearly 24,000 ommatidia each. Dragonflies can be mistaken for the closely related damselflies, which make up the other odonatan infraorder and are similar in body plan though usually lighter in build; however, the wings of most dragonflies are held flat and away from the body, while damselflies hold their wings folded at rest, along or above the abdomen.

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Titan’s Dragonfly Test, New Nuclear Rocket, Shadow Universe

NASA is Continuing to Build the Titan Dragonfly Helicopter. Here are its Rotors

The Enigma of Dragonfly 44, the Galaxy That’s Almost Invisible

The Enduring Mystery of the Dragonfly 44 Galaxy | Quanta Magazine

NASA's Titan Dragonfly will touch down on a field of dunes and shattered ice

NASA's Titan Dragonfly will touch down on a field of dunes and shattered ice

NASA's Dragonfly Helicopter Will be Exploring This Region of Titan

The new, improved Dragonfly is a galactic gas detector

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A map of River Beds on Titan for Dragonfly to Explore

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NASA’s Dragonfly Mission to Saturn’s Moon Titan Announces Big Science Goals

NASA’s Dragonfly Mission to Saturn’s Moon Titan Has Big Science Goals

Dragonfly mission to Titan announces big science goals

Dragonfly Mission To Titan Announces Big Science Goals. The goals for Dragonfly include searching for chemical biosignatures; investigating the moon's active methane cycle; and exploring the prebiotic chemistry currently taking place in Titan's atmosphere and on its surface.