Editors' note: SpaceX successfully launched two NASA astronauts to the ISS on Saturday. Read about it here.
History got put on hold this week, as NASA and SpaceX's first attempt to launch astronauts to the International Space Station was scrubbed Wednesday due to bad weather. Now the second attempt is almost upon us.
In the early afternoon on Saturday, May 30, a SpaceX Falcon 9 rocket will (hopefully) blast off from the launch pad at the Kennedy Space Center in Florida. Inside a Crew Dragon capsule bolted to the top of the rocket, two NASA astronauts will be buckled into purpose-built chairs, their backs to the Earth, racing toward the space station. It'll be the first time in nine years that US astronauts have launched from US soil.
The mission, called Demo-2, has had to overcome its fair share of setbacks over the last year. Not only that, but in the midst of a global pandemic, it's somehow kept to its launch schedule. Rocket launches and space missions often elicit a whole range of emotions, but this one feels extra special -- and the anticipation for SpaceX's maiden crewed voyage was at an all-time high.
We've rounded up everything you need to know about Demo-2, including when to watch, what the mission is all about and the various livestreams you can tune in to if you want to follow along.
What is Demo-2?
Demo-2 is part of NASA's Commercial Crew Program, which involves two commercial spaceflight companies, SpaceX and Boeing, building and launching crew capsules designed to ferry astronauts to and from the ISS.
SpaceX has a history of cargo and payload launches, but this will be the company's first time sending humans off this rock.
Watch this: SpaceX set to to take its first astronauts into space
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When: The launch was originally scheduled for Wednesday, May 27, at 1:33 p.m. PT/4:33 p.m. ET, but the weather didn't cooperate. SpaceX will now aim for its first backup launch time of 12:22 p.m. PT/3:22 p.m. ET on Saturday, May 30. The next opportunity after that will be on Sunday, May 31 at 12:00 p.m. PT/3:00 p.m. ET.
Where: The Falcon 9 rocket and Crew Dragon capsule will blast off from Launch Complex 39A at NASA's Kennedy Space Center in Florida. The historic launch pad has previously hosted Apollo and space shuttle missions.
Why: NASA's Commercial Crew Program is aimed at ending the US reliance on Russian spacecraft for ferrying astronauts to the ISS. NASA has been buying seats on Soyuz capsules since the end of the shuttle program.
This is also part of a broader NASA push for commercial partnerships. "By encouraging industry to provide human transportation services to and from low-Earth orbit, NASA can expand its focus on building spacecraft and rockets for deep space missions," the space agency said.
The Crew Dragon capsule arrived at the launch site in February 2020 for final preparations.
NASAThe spacecraft: The SpaceX Crew Dragon is the human transportation version of the Dragon 2 capsule that has been used to carry cargo to the ISS. While only two astronauts will be on board at the end of May, the capsule can be configured to carry up to seven passengers.
The rocket: SpaceX's proven Falcon 9 rocket will escort Crew Dragon through the launch. NASA's iconic throwback "worm" logo is emblazoned on the side of the rocket. Falcon 9s have successfully launched dozens of SpaceX missions.
The Falcon 9 booster is reusable and will attempt to land on a SpaceX droneship stationed in the Atlantic Ocean.
The crew: NASA assigned astronauts Bob Behnken and Doug Hurley to Crew Dragon back in 2018. Both have been to space on different shuttle missions, with Hurley flying on the final flight of the space shuttle Atlantis in 2011. They will be wearing spacesuits designed in-house by SpaceX.
The goal: If SpaceX passes muster during Demo-2, then NASA will certify Crew Dragon for regular flights back and forth to the ISS. The space agency is already looking ahead to this outcome and has assigned astronauts to the first Crew Dragon operational mission, which could launch before the end of the year if all goes well.
NASA announced on May 22 that Demo-2 had passed its flight readiness review and was cleared to go.
We are go for launch! The Flight Readiness Review has concluded and @NASA's SpaceX Crew Dragon mission is cleared to proceed toward liftoff. pic.twitter.com/G1XdJVAxmv
— Jim Bridenstine (@JimBridenstine) May 22, 2020
How to watch the mission live Saturday
NASA will stream the prelaunch activities and launch through NASA TV starting at 8 a.m. PT/11 a.m. ET on Saturday. The launch timing will depend on good weather conditions both at the launch site and out in the ocean where the crew capsule would splash down in case of an emergency during launch. SpaceX will also provide a launch webcast.
NASA TV will also cover the spacecraft docking procedure. Crew Dragon will take a roughly 19-hour flight before reaching the ISS.
Join CNET's team for live commentary and coverage of the launch on Saturday, May 30 at noon PT/3 p.m. ET.
Musk tweeted on May 22 that he would be watching the event from mission control in Florida. Musk described the mission as the "culmination of a truly incredible amount of work by SpaceX and NASA engineering, along with support of all International Space Station countries."
Making history
NASA is viewing the SpaceX Demo-2 mission as the dawn of "a new era of human spaceflight."
NASA awarded the original Commercial Crew Program contracts to SpaceX and Boeing in 2014 with an eye to launching astronauts in 2017. Delays are common during spacecraft development and both SpaceX and Boeing ran into their share of hiccups. Boeing is still working through a series of technical issues that cropped up during a test flight of its Starliner vehicle in late 2019.
SpaceX, however, successfully completed the Demo-1 uncrewed round trip to the ISS in early 2019 and a critical in-flight abort test at the beginning of the year, setting the stage for Demo-2. It's called Demo-2 because it's still, technically, a "demonstration" rather than a full-fledged space mission. It marks the final test for SpaceX and its Crew Dragon capsule and will allow Elon Musk's spaceflight company to achieve human-rated certification of its spacecraft.
All systems go for SpaceX and NASA in historic astronaut launch
See all photosDemo-2 will also be the first time a two-person NASA crew launched from the United States since the space shuttle Columbia departed for space, on the fourth mission of the program in 1982.
"This is a unique moment where all of America can take a moment and look at our country do something stunning again," said NASA Administrator Jim Bridenstine said in a Tuesday Demo-2 press briefing.
Meet the NASA astronauts
Behnken and Hurley entered preflight quarantine on May 13. Prelaunch quarantines were already standard procedure prior to the coronavirus pandemic, but NASA will add some extra steps to the process. "Hurley and Behnken, as well as those in direct, close contact with the crew will be tested twice for the virus as a precaution," NASA said in a statement in May.
NASA astronauts Bob Behnken and Doug Hurley will be SpaceX's first human passengers when they launch on the Demo- mission.
NASABob Behnken: NASA selected Behnken, an experienced Air Force pilot, as an astronaut in 2000. He last visited space on a shuttle mission in 2010. He has spent 708 hours in space, with 37 of those taken up by spacewalks.
Behnken tweeted on May 12 that he had to get approval from his young son before launch.
My son and I took in a recent Falcon 9/Dragon launch together. This is what it took to get his approval for me to be onboard later this month! pic.twitter.com/NUjRZ5EDy6
— Bob Behnken (@AstroBehnken) May 12, 2020
Doug Hurley: Hurley, a retired Marine, was also selected as an astronaut in 2000. A veteran of two space missions, he was last in orbit in 2011 on NASA's final shuttle mission. That adds some poetry to Hurley's assignment to Demo-2. He was one of the last astronauts to launch from US soil and will be one of the first to do it again.
Hurley shared his own son's drawing of Crew Dragon in late April.
NASA has not yet decided exactly how long Behnken and Hurley will remain on the ISS. "They will perform tests on Crew Dragon in addition to conducting research and other tasks with the space station crew," said NASA. The astronauts will return on Crew Dragon and splash down in the Atlantic where they will be greeted by a SpaceX recovery vessel.
May 30 is set to mark a major milestone in space history. It's not just about the patriotic overtones of launching American astronauts from American soil using an American rocket.
SpaceX and NASA are set to pick up a dropped thread in human spaceflight, filling the void left by the retirement of the space shuttles. We are pretty good at sending robotic explorers to far-flung places in the solar system, but the stakes are always higher when human lives are involved. The world will be watching.
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