Two U.S. astronauts returned to Earth on Sunday, splashing safely into the Gulf of Mexico after a two-month mission to the International Space Station aboard the commercially developed SpaceX spacecraft Crew Dragon.Astronauts Robert Behnken and Douglas Hurley landed at midafternoon off the western coast of Florida, avoiding the dangers of Tropical Storm Isaias moving along the Atlantic Ocean coast of the southern state.The two men had lifted off to space from Florida in May, the first NASA astronaut launch from U.S. soil since 2011 and the first time a commercially developed spacecraft had carried humans into orbit.Hurley and Behnken, both married to astronauts, departed the International Space Station on Saturday night. They awoke to a recording of their young children urging them to “rise and shine” and “we can’t wait to see you.””Don’t worry, you can sleep in tomorrow,” said Behnken’s 6-year-old son, Theo, who was promised a puppy after the flight. “Hurry home so we can go get my dog.”The Dragon capsule slowed from an orbital speed of 28,000 kph to 560 during reentry into the atmosphere and finally to 24 kph at splashdown.In this frame grab from NASA TV, the SpaceX Dragon capsule splashes down Aug. 2, 2020, in the Gulf of Mexico.More than 40 staff were on a SpaceX recovery ship, including doctors and nurses who planned to examine the two astronauts.  NASA astronauts last returned from space to water on July 24, 1975, in the Pacific, the scene of most splashdowns.Until the SpaceX launch, the U.S. had relied in recent years on Russian rockets to send its astronauts to the space station. The private company is planning its next launch near the end of September, sending four astronauts to the space station for six months. 
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