Once more, the crewed Starliner space capsule launch scheduled by Boeing is canceled.

The crewed Starliner spacecraft from Boeing, which was scheduled to carry two astronauts to the International Space Station, has been canceled by NASA. Following a major setback for the crewed test flight—an automatic hold was initiated on the ground launch sequencer—the decision was made. With more launch opportunities on June 5 and 6, the backup possibility is set for Sunday. 

However, it is still unclear if the capsule and rocket will be ready in time. If this mission had been successful, NASA would have been able to give Boeing permission to make regular visits to the orbiting outpost, giving SpaceX's Crew Dragon spacecraft another alternative.

How does Boeing's Starliner compare to SpaceX's Crew Dragon?

NASA has created the Starliner and Crew Dragon spacecraft to transport humans to the International Space Station (ISS). The Boeing Starliner is completely self-sufficient and can be overseen and managed by both SpaceX mission control and the astronauts occupying the spacecraft. It is made up of three windows, the trunk, and the capsule, which accommodates both crew and cargo.

After making its maiden crewed journey in November, the Crew Dragon has successfully transported people and goods to the International Space Station. Unfortunately, the Starliner's unmanned orbital test flight in December 2020 was marred by technical issues that prevented it from docking with the International Space Station. NASA is still optimistic that Starliner will return to flight in 2022 and join Crew Dragon and the International Space Station in orbit.

Although each capsule has advantages over the other, the Crew Dragon is clearly superior to the Starliner. It has a history of crewed trips to the International Space Station, a track record of successful launches, and cheaper costs per seat. NASA intends for both spacecraft to carry on advancing human space exploration.