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The spacecraft used to transport astronauts from Earth to and from the International Space Station (ISS) is currently the SpaceX Crew Dragon, also known as Dragon 2. It is a reusable spacecraft designed and built by SpaceX, an aerospace manufacturer and space transportation company founded by Elon Musk. The Crew Dragon is launched on top of a Falcon 9 rocket and can carry up to 7 passengers. It was first used for crewed missions in 2020, marking a new era of human spaceflight for NASA. Prior to the retirement of the Space Shuttle program in 2011, the Space Shuttle was used for transporting astronauts to and from the ISS.