"This is a big deal for our country, and we want America to know we're back", Bridenstine said in a speech.
Victor Glover and Mike Hopkins, who has spent more than 160 days in space, were selected to crew SpaceX's first full mission.
The space agency's priority is safe, reliable and cost-effective travel to low-Earth orbit and back (at least for now) for the crewed flight tests called Demo-1 by SpaceX and Orbital Flight Test by Boeing. The missions will likely include veterans from the US' Space Shuttle program, Gizmodo reported.
Clockwise from top left: Sunita Williams, Bob Behnken, Doug Hurley and Eric Boe.
"It's absolutely an opportunity of a lifetime", said Mann, who was selected as an astronaut in 2013. As a naval aviator, she flew combat missions during operations Iraqi Freedom and Enduring Freedom before becoming a naval test pilot. He has spent 166 days on the International Space Station for Expeditions 37/38, and conducted two spacewalks.
Crew Dragon is a passenger version of a robotic cargo ship Dragon, and SpaceX plans to use the spacecraft to send astronauts to the worldwide space station. Boeing will launch its CST-100 Starliner on top of a United Launch Alliance Atlas V rocket at Cape Canaveral Air Force Base, also in Florida.
Once Crew Dragon and Starliner are certified by NASA for regular use, they will be used for operational ISS flights around 2020. Those were Behnken, Boe, Hurley and Williams.
A white SpaceX launch suit and a blue Boeing launch suit stood on display behind the astronauts on stage.
The astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon give a thumbs-up upon introduction at NASA's Johnson Space Center in Houston, Texas, Aug. 3, 2018.
Thomas Markle says Meghan and the royal family 'cut me off completely'
The Queen Consort to King George VI was known for participating in many public engagements and dedicating herself to the service of her country.
This is also the first time that U.S. private companies will handle this routing, since NASA asked Boeing and SpaceX in 2014 to develop new launch systems to take over in 2019.
Chris Ferguson, a former NASA astronaut who has worked with Boeing as it developed its Starliner spacecraft, will fly as a private astronaut.
Some of the newly named crew, like Cassada, joined NASA expecting to fly on Soyuz spacecraft before any new American ship. He was a test pilot and colonel in the Marine Corps before coming to NASA in 2000 to become an astronaut.
Both vehicles are capable of reaching the ISS autonomously, and will do so and return to Earth before humans climb aboard.
Seven men and four women will be go into orbit on crew capsules built by Boeing and SpaceX.
Those launch targets may change. The unmanned test flight is scheduled for late 2018 or early 2019. But that changed Thursday (Aug. 2) when NASA rolled out a set of new launch targets. The test launch will be her first trip to space.
Last week, Boeing confirmed that it had a problem with its launch-abort system, which is created to ferry crews to safety in the event of an emergency.
Since 2011, the United States has relied on Russian Federation to ferry astronauts to the space station. Her first was a space shuttle mission that launched in 2007, and the second was a Soyuz-launched mission in 2012.
Trump's Twitter praise for the astronauts did appear to gloss over the fact that NASA is actually paying SpaceX and Boeing to fly American astronauts. "We take it seriously". "We're not going to let you down".