Hubble Space Telescope enters safe mode after unexpected glitch
Summary
The Hubble Space Telescope went into another protective safe mode early Sunday morning, March 7, 2021, after an onboard software program failed during a guide star acquisition. In safe mode, the telescope is not carrying out its regularly scheduled observing program, pointing toward targets or collecting data, but its solar panels keep it powered. That dark spell lasted three full weeks, but Hubble rebounded in good shape when engineers successfully mobilized a backup gyroscope. Significant progress was made in the development of NASA’s James Webb Space Telescope in February 2021 with the success of its final functional performance tests. The iconic observatory went into a protective safe mode early Sunday morning, March 7, 2021, after an onboard software program failed during a guide star acquisition.
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