“NASA's Pathfinder, Pathfinder Plus, Centurion and Helios Prototype were an evolutionary series of solar- and fuel-cell-system-powered unmanned aerial vehicles. AeroVironment, Inc. developed the vehicles under NASA's Environmental Research Aircraft and Sensor Technology (ERAST) program. They were built to develop the technologies that would allow long-term, high-altitude aircraft to serve as “atmospheric satellites”, to perform atmospheric research tasks as well as serve as communications platforms”. – Wikipedia

Photo: The solar-electric Helios Prototype flying wing is flies over the Hawaiian islands of Niihau and Lehua during the first solar-powered test flight July 14, 2001 from the U.S. Navy's Pacific Missile Range Facility on Kauai, HI. The 18-hour flight was a functional checkout of the aircraft's systems and performance in preparation for an attempt to reach sustained flight at 100,000 feet altitude later in the summer. (Photo Courtesy of NASA/Getty Images)

This watering hole is the social hub of the veldt; the scrubby grasslands that stretch across Namibia. The scorched earth supports sometimes fragile populations of magnificent wildlife – from endangered predators to plentiful herds of game. But these gentle giraffes and elephants need to be careful: lions don’t sleep at night, they hunt! The spectacular starscape above southern Africa is unchanged since explorers first mapped the continent. The photographer, Pietro Olivetta from Italy, said he had to be patient to capture these shots – but it was worth the wait. (Photo by Pietro Olivetta/Caters News)

On the Internet appeared the video, on which shows, according to the author of the video, as in the photos, which were taken by U.S. space probe MESSENGER (MErcury Surface, Space ENvironment, GEochemistry and Ranging), American automatic interplanetary station (AWS) for the study of Mercury, on the surface of Mercury has been found an unusual object... (Photo by NASA)

A dog sanctuary in Mexico is the first of its kind as it provides troubled canines with a safe and loving home. Milagros Caninos (Miracle Dogs) is a sanctuary in Mexico City that takes in abused, elderly, terminally ill, and disabled dogs.

When this baby elephant saw the waves on the beach, he could not resist to take a plunge. See how happy this cute elephant while playing on the beach in Phuket-Thailand. You can see him smiling many times, probably he enjoyed his time on the water.

Amanda Lepore attends the “Doll Parts” book launch party at The Standard, Highline on April 18, 2017 in New York City. (Photo by J. Kempin/Getty Images)

“The Skeleton Krewe was founded in 1999 by Christopher Kirsch. Inspired by the early days of Carnival before tractors and floats replaced walking processions, the Krewe has become one of New Orleans' premier marching clubs. The Krewe began actively marching as a small group of friends, but has grown to 40 active members”. – The Skeleton Krewe. Photo: “The Skeleton Krewe 2013 – Manning”. (Photo by Kevin O'Mara)