In 2013, she was one of the eight candidates selected from more than 6,300 applicants to train as an astronaut for NASA, and the agency later announced Mann could be one of the first astronauts sent on a mission to Mars.
In an interview, NASA Administrator Jim Bridenstine compared the crews to the Mercury astronauts, the seven test pilots featured in "The Right Stuff", who flew at the dawn of the Space Age.
These pioneering flights to the International Space Station aboard commercially built crew capsules will be the first leaving U.S. soil to put people into orbit since the iconic space shuttle program ended in 2011.
"This is a big deal for our country and we want America to know that we are back, that we are flying American astronauts on American rockets from American soil", Bridenstine said in Houston.
The American space agency said on August 3 that the astronauts will crew the first test flight and mission of both Boeing's CST-100 Starliner and SpaceX's Crew Dragon.
Boeing's CST-100 Starliner and the SpaceX Crew Dragon were selected by NASA for crew transport to the ISS.
On the test flight for the Starliner will be: Eric Boe, a former space shuttle pilot who retired from the Air Force; Christopher Ferguson, a Boeing astronaut who left NASA in 2011; and Lt. Col. Nicole Mann of the Marine Corps. "With the additional access to space, new industries will develop in the years ahead at an increasing rate", said Lissy Donald, managing director of Compass International - a UAE-based firm that is the regional partner of Nasa and the United States and Space Rocket Centre.
"This is truly an exciting time for human spaceflight in our nation, and believe me, it's only going to get better as we charge off into the future", said Bob Cabana, a former shuttle commander who now heads Kennedy Space Center. NPR reports that some critics think the SLS is too expensive compared to industry developments like SpaceX's Falcon Heavy.More news: Iger unveils plans for 'Disney Play' streaming service
NASA has worked closely with Boeing and SpaceX to design, develop, and test their spacecraft and systems to ensure they are safe.
SpaceX's ambitious Dragon Spacecraft rings in the good news of the successful completion of another International Space Station mission (CRS-15).
Earlier this year, NASA unveiled a commercial crew schedule that called for the first uncrewed test flights by SpaceX and Boeing this month. He began his career at NASA in 2000 and piloted two space shuttle missions, one on Endeavor in 2009 and the final shuttle mission on Atlantis in 2011. The latter as termed by IBM was touted "the first AI companion of human beings in space".
SpaceX's Dragon cargo spacecraft came back to Earth on Friday after completion of its mission of supplying cargo to the International Space Station.
This mission will mark SpaceX's first operational crew mission under our current Commercial Crew Transportation Capability contract with NASA.
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.
SpaceX's first crew tests will be manned by shuttle veterans Robert Behnken and Douglas Hurley. These test flights will provide invaluable data on how rockets, ground systems, operations and the spacecraft themselves perform.
Maintaining the International Space Station costs the federal government up to $4 billion a year, and NASA is working on plans to privatize it. She has logged 322 days in space. Success in these missions means that the Boeing and SpaceX spacecraft could start regular servicing missions to the ISS. He also commanded two more spaceflights in 2008.
More astronauts will be announced to join the crews at a later date, NASA said.