Assignments for the crew flight tests and the first post-certification missions will be revealed during an event that kicks off at 11 a.m. EDT at NASA's Johnson Space Center in Houston.
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. Boeing said earlier this week it would carry out a test flight of the Starliner vehicle without humans later this year or in early 2019, after it suffered an issue with the capsule's launch abort system during a test in New Mexico in June, according to SpaceNews.
"The first flight is something you dream about as a test pilot, you know, and you don't think it's ever going to happen to you", Hurley said.
"As a test pilot, it doesn't get any better than this", said astronaut Nicole Aunapu Mann, a Naval aviator who will make her first trip into space on the first Starliner crew.
NASA has been collaborating with commercial space companies for years, with the goal of having the private sector take over "routine" trips to the space station and low Earth orbit. He flew on two flights of the space shuttle including the final mission, Atlantis's STS-135.More news: Trump says he is willing to meet Rouhani without ‘preconditions’
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In attendance for the announcement will be NASA Administrator Jim Bridenstine, Johnson Space Center Director Mark Geyer and Kennedy Space Center Director Bob Cabana. Boeing and Space Adventures, the US company that arranged space tourist flights on Russian Soyuz spacecraft, have a partnership that could allow paying passengers to ride in a fifth seat on CST-100 missions for shorter-duration missions.
NASA has spent billions developing the Space Launch System and its first flight, scheduled for 2020, will send an uncrewed capsule around the moon and back. Crew members have worked years with companies to get here and they said they can not wait for the flights to begin next year.
She was the first person to run a marathon in space, cranking out the miles on a treadmill in the space station while the Boston Marathon was being run on Earth in April 2007. The first tests flights are expected to take place within the next few months, into early next year.
During the manned tests, the astronauts will be able to use the displays inside the spacecraft, communicate with mission control and practise manual controls during flight.
Victor Glover, 42, and Michael Hopkins, 49, will fly on the first operational mission of SpaceX's crewed Dragon. Ferguson will become the first former Nasa astronaut to return to orbit as a company's crew member when he flies. Sometimes called the "Commercial Crew Cadre", those astronauts are seasoned veterans who've worked closely with Boeing and SpaceX on their new spacecraft and systems over the past three years. Mann's flight with Boeing will be her first to space.
SpaceX's Crew Dragon spacecraft will be launched on one of the company's Falcon 9 rockets, while Boeing's Starliner will hitch a lift on United Launch Alliance's Atlas 5. Hopkins logged 166 days aboard the space station in 2014.