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Sierra Space has completed key ground tests for its Dream Chaser spaceplane, pivoting the vehicle's mission towards national security after a NASA contract change.
NASA and Sierra Space have revised their contract, changing the Dream Chaser spaceplane's debut mission in 2026 to an independent flight instead of an ISS visit.
Sierra Space has updated the first flight of its Dream Chaser spaceplane to a demonstration mission, now targeted for late 2026, to validate its technology.
Discover the X-40A, the unpowered prototype vehicle that mastered autonomous runway landings and paved the way for the U.S. Space Force's X-37B spaceplane.
