NASA wants two U.S. spacecraft to send astronauts to ISS. Backup options are once again in play after a rare rocket failure last week indefinitely grounded SpaceX's Crew Dragon.

Rare SpaceX rocket failure shows exactly why NASA wants 2 commercial options to fly astronauts to ISS

Source: space
Source Link: https://www.space.com/spacex-rocket-failure-two-vehicles-iss-astronaut-missions