“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)

A young and sleepy penitent of the Cofradia de Jesus del Via crucis is carried by another as they walk the streets during a Holy Week procession on April 19, 2011 in Zamora, Spain. Easter week is traditionally celebrated with processions in most Spanish towns. (Photo by Jasper Juinen/Getty Images)

An injured woman is pictured near the Blue Parrot nightclub in Playa del Carmen, Quintana Ro state, Mexico where 5 people were killed, three of them foreigners, during a music festival on January 16, 2017. A shooting erupted at an electronic music festival in the Mexican resort of Playa del Carmen early Monday, leaving at least five people dead and sparking a stampede, the mayor said. Fifteen people were injured, some in the stampede, after at least one shooter opened fire before dawn at the Blue Parrot nightclub during the BPM festival. (Photo by Victor Vargas/AFP Photo)

Nursery plants are seen placed in people's seats during a rehearsal as Barcelona's Gran Teatre del Liceu opera reopens its doors with a concert for plants, to raise awareness about the importance of an audience after the coronavirus lockdown, in Barcelona, Spain on June 22, 2020. The Gran Teatre del Liceu reopens its doors, in which the 2,292 seats of the auditorium will be occupied on this occasion by plants. It will be on 22 June, broadcast live online, when the UceLi Quartet string quartet performs Puccini's “Crisantemi” for this verdant public, brought in from local nurseries. (Photo by Nacho Doce/Reuters)

Honda Spanish rider Marc Marquez crashes with Aprilia Portuguese rider Miguel Oliveira during the MotoGP race of the Portuguese Grand Prix at the Algarve International Circuit in Portimao, on March 26, 2023. (Photo by Marcelo Del Pozo/Reuters)

A model displays a creation by designers members of the Carabobo Sostenible program who present a collection made of corn cob husks, plastic, and paper in front of the facade of the Virgen del Carmen church in the town of Mariara, Carabobo state, Venezuela, on August 3, 2023. (Photo by Juan Carlos Hernandez/AFP Photo)

A Cucumber and a Chuta Cholero hug during the traditional festival “Desentierro del Pepino” (unearthing the Cucumber) to mark the beginning of carnival on January 21, 2024 in La Paz, Bolivia. People dug up the cucumber from the cemetery and walk through the streets with two characters, the Ch'uta and the Chola. (Photo by Gaston Brito/Getty Images)

A puma rolls and yawns on frost-covered ground in Laguna Amarga, Torres del Paine, Chile in the first decade of December 2025, pausing briefly after several hours of rest before continuing on her way. (Photo by Sara Jenner/Solent News & Photo Agency)