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Caltech robot makes history by building in space

Now, here's an exciting milestone: a Caltech-built robot has autonomously assembled part of a structure in orbit, without astronauts. During the ASTRA demonstration, its robotic arm joined tubes and connectors into the first section of a planned 1.4-meter reflector antenna, although technical and scheduling challenges prevented completion. Even this partial success shows that robots may one day build structures too large to fit inside a rocket fairing. That could open fresh possibilities for giant space telescopes, powerful communications antennas, and space-based solar energy.
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