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On February 12, 2026, NASA signed an agreement with Vast for Vast to conduct a private astronaut mission to the International Space Station.
Vast is developing next-generation commercial space stations intended to succeed the ISS.
Vast intends to use the Private Astronaut Mission contract for technology demonstration and to gain operational experience toward realizing its own space station and establishing future low Earth orbit operations.
Naoko Yamazaki, a former JAXA astronaut, is the general manager of Vast Japan.
Vast will send private astronauts to the ISS for an expected two-week mission under its NASA contract.
Vast is headquartered in California and is led by CEO Max Haot.
Axiom Space conducted the previous five private astronaut missions to the ISS prior to Vast’s award.
Under the agreement, Vast will purchase various mission services from NASA while NASA will purchase research sample return capability from Vast’s mission services.
The contract for the sixth Private Astronaut Mission is Vast’s first contract to send a private crewed mission to the International Space Station.
The targeted timeframe for Vast’s ISS private astronaut mission is summer 2027 or later, with a crew planned to stay on the ISS for up to 14 days.
Vast Japan was established in December 2025.
Vast has contracted SpaceX to provide launch services for its private astronaut mission to the ISS.
Vast CEO Max Haot announced in 2024 that Vast would bid on Missions Five and Six of NASA’s private astronaut program.
The NASA contract with Vast is for the agency’s sixth private astronaut mission to the International Space Station.
Vast will send private astronauts to the International Space Station in summer 2027 under a contract with NASA.
Vast is based in Los Angeles, California.
Axiom and Vast are each building private space stations intended to eventually replace the International Space Station.
The Space Domain Awareness panel at the SmallSat Symposium retired the "Big Sky" theory that space is too vast for collisions to matter.
Vast won its first private astronaut mission to the International Space Station.
Vast and Axiom are each building private space stations intended to vie to replace the International Space Station.