SpaceX may launch its new spaceship for NASA in March - a vital test that will show it can safely fly astronauts

• SpaceX and Boeing have built new spaceships, called Crew Dragon and CST-100 Starliner, respectively, to launch NASA astronauts into orbit.
• But each company must perform several test-launches before NASA will certify the space capsules for regular flight.
• Crew Dragon is scheduled to launch the first test mission - one without any astronauts on board - on March 2.
• Boeing may follow with the launch of its CST-100 Starliner in April, and SpaceX with its first crewed launch in July.

For the first time in nearly eight years, an American-made spaceship designed to fly NASA astronauts may soon launch from US soil.

SpaceX, the aerospace company founded by Elon Musk, has agreed on a March 2 inaugural launch date for its new space capsule, called Crew Dragon, NASA said on Wednesday. The vehicle, shown above, will launch into orbit atop a Falcon 9 Block 5 rocket with no people on board, dock with the $150 billion International Space Station, and then return to Earth.

Boeing, another NASA partner planning to eventually fly its astronauts, is looking to April for the first orbital test-launch of its CST-100 Starliner vehicle.

"The uncrewed test flights will be the first time commercially-built and operated American spacecraft designed for humans will dock to the space station," NASA representative Anna Heiney wrote in a blog post on Wednesday. The first flights are dress rehearsals for missions with astronauts aboard the vehicles."

SpaceX's experimental launch, which won't carry people, was originally scheduled to fly in December 2016. But following the explosion of a Falcon 9 rocket on a launch pad in September of that year (no one was hurt), NASA gave the system more scrutiny. The agency requested more design tweaks and rocket flight data, and postponed a notional launch date for SpaceX's first Crew Dragon demonstration mission more than a dozen times.

The private-government partnerships with NASA are part of a roughly $8 billion effort to replace the ability to fly astronauts that was lost when the agency retired its space shuttle fleet in 2011. The Commercial Crew Program, as the effort is called, has been in the works since 2010.

Read more: NASA names 9 astronauts who will fly SpaceX and Boeing's spaceships for the first time - here's who they are

"NASA has been working together with SpaceX and Boeing to make sure we are ready to conduct these test flights and get ready to learn critical information that will further help us to fly our crews safely," Kathy Lueders, the manager of CCP, said in NASA's post. "We always learn from tests."

Although NASA has repeatedly delayed its CCP launches, the March 2 date appears to be firmer than usual. Irene Klotz of Aviation Week reported on Wednesday that NASA and SpaceX managers and engineers are gathering on February 22 for a flight readiness review meeting. Such reviews are typically reserved for just before serious attempts of a launch.

Why NASA is eager to launch American-made commercial spaceships

NASA hasn't transported its own astronauts to the space station since July 2011.

At the behest of lawmakers, the agency space shuttle fleet retired due to concerns about its safety and cost, the development of a new government launch system, and the rapid rise of the commercial spaceflight industry. According to estimates that spread out the shuttle's development cost, each launch cost roughly $1.5 billion in taxpayer dollars.

Ever since 2011, the agency has exclusively relied on Russia to fly its astronauts on Soyuz spaceships. The arrangement has become increasingly costly, with Russia nearly quadrupling its prices for NASA over a decade. (In 2018, a round-trip ticket for a NASA astronaut cost about $81 million versus $22 million in 2008.)

More recently, one Soyuz rocket failed during launch - the crew survived unscathed - and a mysterious hole was discovered in another spacecraft at the ISS.

NASA is thus funding Commercial Crew to seed reliable and cost-effective ways of taxiing its astronauts to and from orbit. The agency hosted a years-long commercial competition, and SpaceX and Boeing emerged as the frontrunners for regularly flying crews.

SpaceX successfully performed a launch pad abort test in May 2016, showing that in the event of a rocket failure, it could reliably whisk a crew to safety. Boeing is now preparing to perform a similar test with the Starliner in June 2019, according to NASA.

If all goes well with SpaceX-Demo 1, as the first experimental SpaceX mission is officially called, the company will perform an in-flight abort test in June.

Crew Dragon may then ferry its first human crew to the space station in July 2019. Boeing hopes to follow suit no sooner than August 2019.

In 2015, NASA selected veteran astronaut Sunita "Suni" Williams and three other "space pioneers" to climb inside and provide feedback on the new spaceships. In August 2018, she was selected to fly Boeing's second crewed flight of the Starliner.

"Five years ago, this would have been like, 'No way, what are we doing asking commercial providers to be able to do this?'" Williams previously told Business Insider. "Now it feels like a natural progression for space travel."

Read more: These are the 577 positions SpaceX is cutting at its headquarters in a major round of layoffs

SpaceX plans to launch its first-ever Crew Dragon from Launch Pad 39A at Kennedy Space Center in Cape Canaveral, Florida. The company has leased and retrofitted the historic site from NASA, using it to launch Falcon 9 rockets and the first-ever Falcon Heavy rocket.

Following the flight readiness review on February 22, however, there is a decent chance the SpaceX-Demo 1 launch could once again be delayed.

"As with all human spaceflight vehicle development," Heiney wrote in her post on Wednesday, "learning from each test and adjusting as necessary to reduce risk to the crew may override planning dates."

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