The Hubble Space Telescope has been drifting blind since a gyroscope failure and a set of degraded instruments threatened to end its usefulness, and in 2009 NASA sends seven astronauts on Space Shuttle Atlantis to fix it one last time. Shot with IMAX 3D cameras that flew on the actual mission, the film follows astronauts including John Grunsfeld and Mike Massimino through five spacewalks, replacing gyroscopes and installing new instruments while working in bulky suits with limited visibility and no room for error six hundred kilometers up. Leonardo DiCaprio narrates, laying out what the repair means for the telescope's remaining years of service. Between the spacewalk footage, the film cuts to the images Hubble has actually returned: the Eagle Nebula's star-forming pillars, distant galaxies, the raw scale of what the telescope sees once it works again. The 3D format is built for exactly this pairing, close-up mechanical labor in a hostile environment set against the deep-field pictures that labor makes possible.