NASA’s Hubble Space Telescope entered a new era of science operations this week, when engineers shut down one of the three operational gyroscopes aboard the observatory. The two-gyro mode is expected ...

WASHINGTON — NASA’s venerable Hubble Space Telescope is in safe mode after the failure of one of its gyros and a problem with another, but the agency said this specific problem did not put the ...

HOUSTON—As anticipated, NASA’s Hubble Space Telescope has initiated imagery gathering with a single gyroscope, following the malfunction of one of the three aiming and steering devices in late May ...

NASA shut down one of the Hubble Space Telescope's three remaining operational gyroscopes this week, putting the observatory into a "two-gyro" mode to preserve the third gyro and hopefully extend ...

The Hubble Space Telescope will transition to operating with a single gyroscope following repeated interruptions caused by a faltering unit, necessitating a safe mode entry on May 24. This decision, ...

This proposal uses an FGS as an astrometer to observe bright stars (V12) in Position mode, with the two other FGSs operating as guiders. The data obtained by the astrometer will be used to "witness" ...