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CNN Editorial Research Here’s some background information about Mars exploration. The United States and the Soviet Union are the only two countries to land a spacecraft on Mars. Facts There have been nine successful US Mars landings: Viking 1 and Viking 2 (both 1976), Pathfinder (1997), Spirit and Opportunity (both 2004), Phoenix (2008), Curiosity (2012),

By Joshua Berlinger, Aditi Sangal and Adam Renton, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Ben Morse, Joshua Berlinger and Adam Renton, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Joshua Berlinger, Brett McKeehan and Ben Morse, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Gul Tuysuz and Arwa Damon, CNN In the small village of Kacarlar, on Turkey’s southern coast, farmers are facing apocalyptic scenes as wildfires continue to sweep the country. “The animals are on fire,” 56-year-old resident, Muzeyyan Kacar, told CNN. “Everything is going to burn. Our land, our animals and our house. What else do

By Ashley Strickland, CNN Messengers from the past are all around us. In our solar system, comets are the icy leftovers from when the sun and planets formed. They hold the mysteries of that primordial soup. The murky beginning of life on Earth is thought to be trapped within the deepest, oldest rocks, but scientists

By Ashley Strickland, CNN When NASA returns humans to the moon, SpaceX will build the vehicle to land the first woman and next man on the lunar surface. The US Government Accountability Office denied protests that were filed by Blue Origin and Dynetics on Friday. The protests were filed by the companies in April after

By Megan Marples and Ashley Strickland, CNN See Saturn shine brightly for this once-a-year nighttime spectacle. On August 1 and 2, Saturn will be at opposition, meaning the Earth will be located between the ringed planet and the sun. This is when the outer planet will be at its most luminous, making for a brilliant

By James Briggs, CNN A bone found in the Pyrenees mountains has been identified as belonging to missing British hiker Esther Dingley, the charity representing her family said in a statement Friday. The 37-year-old had been out walking alone near the border between Spain and France and was last seen on November 22. Since Dingley

By Helen Regan, Aditi Sangal, Adam Renton and Joshua Berlinger, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Ashley Strickland, CNN Peering into the life of a young woman who lived 4,000 years ago during the Bronze Age is now possible thanks to new research. The young woman, who lived along the Danube River in Hungary, was found with twin 32-week-old fetuses in a cemetery. In a quest to understand more about

By Matias Grez, Ben Church, Helen Regan, Aditi Sangal, Adam Renton, Melissa Macaya, Melissa Mahtani and Meg Wagner, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Kristen Rogers, CNN Between midnight and dawn on Wednesday and Thursday (July 28 — 29), the Delta Aquariids meteor shower will light up the night sky. As Earth orbits the sun, it encounters the lopsided orbit of a comet, the icy surface of which leaves behind dust and rocks as they boil off from