Scientists with NASA’s Mars 2020 mission and the European-Russian ExoMars mission traveled to the Australian Outback to hone their research techniques.
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On Sept. 4, 2019, a loose chain of tropical cyclones lined up across the Western Hemisphere.
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Located in the northern constellation of Ursa Major, which also includes the Big Dipper, nearby galaxy Messier 81 is easily visible through binoculars or a small telescope.
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At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 61 crewmember Jessica Meir of NASA climbs aboard a Soyuz trainer during final crew qualification exams on Aug. 30.
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NASA astronaut Christian Koch snapped this image of Hurricane Dorian as the International Space Station during a flyover on Monday, September 2, 2019.
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