Hubble has been been operational for 28 years
BBC: Hubble telescope hit by mechanical failure
The Hubble Space Telescope is operating with only essential functions after it lost one of the gyroscopes needed to point the spacecraft.
The observatory, described as one of the most important scientific instruments ever created, was placed in "safe mode" over the weekend, while scientists try to fix the problem.
Hubble had been operating with four of its six gyroscopes when one of them failed on Friday.
The telescope was launched in 1990.
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WNU Editor: This is bad. It looks like this may be the end of the Hubble Telescope.