Dancers perform during a general rehearsal of “Kreatur” (Creature) by German choreographer Sasha Waltz in collaboration with artist and fashion designer Iris van Herpen and light designer Urs Schoenebaum in Berlin, Germany on June 8, 2017. (Photo by Stefanie Loos/Reuters)

Chileans watch the sky with special suits prior to a total solar eclipse on July 2, 2019 in Paiguano, Chile. Around 25,0000 tourists arrived to Paiguano, a small town of around 1,000 inhabitants in the Elqui Valley, 650 km away Santiago. This is the only Earth's total solar eclipse of 2019 and the first one since 2017. From this point, the sun will fully disappear for around two minutes. It is best visible from a stripe in the South Pacific, Chile and Argentina. (Photo by Marcelo Hernandez/Getty Images)

“The Boeing X-45 unmanned combat air vehicle is a concept demonstrator for a next generation of completely autonomous military aircraft, developed by Boeing's Phantom Works. Manufactured by Boeing Integrated Defense Systems, the X-45 was a part of DARPA's J-UCAS project”. – Wikipedia

Photo: Two X-45A Unmanned Combat Air Vehicles (UCAV) are shown to members of the news media July 11, 2002 at Edwards Air Force Base, California. The X-45A, developed by The Defense Advanced Research Projects Agency and the Boeing Company, is the first unmanned system designed from inception for combat missions. (Photo by David McNew/Getty Images)

Cory Ritz braces himself as a wave bursts onto a pier at the Boynton Beach inlet on August 25, 2011 in Boynton Beach, Florida. Hurricane Irene is moving over the Bahamas and could still be a major storm as it approaches the North Carolina coast the morning of August 27. (Photo by Joe Raedle/Getty Images)

Kirby Chambliss of the United States flies in formation with Matt Hall of Australia, Yoshihide Muroya of Japan and Nigel Lamb of Britain prior to the third stage of the Red Bull Air Race World Championship in front of the Petronas Towers in Kuala Lumpur, Malaysia, on May 15, 2014. (Photo by Joerg Mitter/Red Bull via Reuters)

A reveler dances during the Carmelitas street party in Rio de Janeiro, Brazil, Friday, March 1, 2019. Much of the appeal of Rio street parties is the variety of themes and that people can dress up in costumes or not. (Photo by Leo Correa/AP Photo)

A British Airways Airbus A380 aircraft arrives over the top of residential houses to land at Heathrow Airport in west London, Britain, February 27, 2020. (Photo by Hannah McKay/Reuters)

Yak near Yamdrok lake, Tibet. It is a long-haired bovinae found throughout the Himalayan region of south Central Asia, the Tibetan Plateau and as far north as Mongolia and Russia. The Tibetan economy is dominated by subsistence agriculture. Due to limited arable land, the primary occupation of the Tibetan Plateau is raising livestock, such as sheep, cattle, goats, camels, yaks, dzo, and horses. The Tibetan yak is an integral part of Tibetan life. (Photo by Dennis Jarvis)