"Thanks for flying @SpaceX." Current Location: Planet Earth. A 2:48pm ET, @AstroBehnken and @Astro_Doug splashed down, marking the first splashdown of an American crew spacecraft in 45 years. #LaunchAmerica," NASA said in a tweet earlier.
The spacecraft is the first to take the American astronauts to orbit from American soil in nearly a decade.
The Indian-American astronaut will fly the first space capsules built by private companies, SpaceX and Boeing.
The eight active NASA astronauts and one former astronaut-turned-corporate crew member will launch on Boeing CST-100 Starliner and SpaceX Dragoncapsules to the International Space Station beginning in 2019.