NASA Reschedules Boeing Starliner Test Flight to Space After Malfunction — How to Watch

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UPDATE: On Thursday, July 29, the Russian Nauka module, which had just arrived to the International Space Station (ISS) that morning, inadvertently fired its thrusters due to a malfunction, causing the ISS to lose control of its position. NASA and Roscosmos teams, as well as the crew onboard the ISS, were able to stop the station's uncontrolled spin and bring it back to a stable position. As such, the Starliner OFT-2 mission that was scheduled to take place on Friday, July 30, has been postponed while the ISS undergoes system checks to verify its readiness to receive the spacecraft. The next launch opportunity will be Tuesday, Aug. 3, at 1:20 p.m. EDT, with a backup window on Wednesday, Aug. 4. This article has been updated to reflect this. As with all space missions — and especially test flights — launch dates are subject to change.

This has already been a busy summer in spaceflight, but it's not over yet. Following on the heels of the successful test flights by Virgin Galactic and Blue Origin that carried their billionaire founders, Richard Branson and Jeff Bezos, respectively, to space, NASA has cleared Boeing for launch next week.

On Tuesday, Boeing will launch its new Starliner spacecraft on an uncrewed test flight to the International Space Station (ISS). Here's everything you need to know about the mission, including how to watch it live.

What is the Boeing Starliner?

Frequent fliers might be familiar with Boeing's Dreamliner aircraft, otherwise known as the 787, but Starliner is a vastly different vehicle. It's Boeing's CST-100 spacecraft, a seven-passenger capsule designed to ferry astronauts to the International Space Station — and maybe even beyond. The capsule, which resembles NASA's own Apollo vehicle and SpaceX's Crew Dragon vehicle, is being developed as part of NASA's Commercial Crew Program, which allows private companies to develop new crewed spacecraft. Right now, SpaceX is the only company to have begun Commercial Crew operations to the ISS.

Boeing CST-100 Starliner
Boeing CST-100 Starliner

GREGG NEWTON/Getty Images A close-up view of the CST-100 Starliner spacecraft while rolling out from Boeings Commercial Cargo and Processing Facility in the pre-dawn hours at the Kennedy Space Center in Cape Canaveral, Florida on July 17, 2021, ahead of its scheduled launch on July 30.

How is the Starliner different from Virgin Galactic's SpaceShipTwo and Blue Origin's New Shepard?

Both SpaceShipTwo and New Shepard are suborbital vehicles, meaning they are not designed to circle the Earth in space. Instead, they provide a relatively quick up-and-down flight, which is why they're geared towards space tourism and microgravity research. Starliner, on the other hand, is an orbital-class spacecraft, and it's designed to circle the Earth to rendezvous with the ISS, then remain docked there in low-Earth orbit (LEO) for up to 210 days. NASA will use the vehicle to transport astronauts and cargo to the ISS.

What is the purpose of this test flight?

The OFT-2 mission is Starliner's second test flight to prove its launch, orbit, docking, and reentry capabilities, and it will be uncrewed, meaning no humans will be on board. Its first test flight in December 2019 (OFT-1, also uncrewed) was a failure; the vehicle did not reach its intended orbit due to technical issues, so it wasn't able to dock at the ISS. It did, however, land safely on Earth. This test flight will be a repeat of the first one — hopefully with a better end result. If all goes well, Boeing could start flying humans on test flights as soon as next year.

Where can I watch the Starliner test flight?

The Starliner test flight is scheduled to launch at 1:20 p.m. EDT on Tuesday, Aug. 3, from Cape Canaveral Space Force Station in Florida atop a ​​United Launch Alliance (ULA) Atlas V rocket. Under the original flight plan for the July 30 launch, it would have taken approximately 31 minutes to reach orbit, after which it would have spent about 24 hours circling the Earth en route to the ISS. Since the launch date has changed, timing might also change — NASA has not yet issued the new mission schedule. Keep an eye on NASA's social media accounts for the latest updates on the timeline.

In any case, NASA will stream the launch and docking via NASA TV, which you can watch here, on the NASA app, or via NASA's social media channels. The broadcast will likely go live about two hours or so before launch on Tuesday and continue through orbital insertion; it will later resume for docking. NASA hasn't yet announced when Starliner will undock from the ISS and return to Earth, but it'll likely be about one week after arrival.

Stefanie Waldek is a freelance space, travel, and design journalist. Follow her on Instagram and Twitter at @stefaniewaldek.

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