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takyon writes:

After briefly going offline, NASA's Chandra X-ray space telescope is back in action

After briefly going into safe mode last week, NASA's Chandra X-ray Observatory — which observes galaxies and nebulas from Earth's orbit — should be getting back to normal operations soon. The cause of the disruption was a small glitch in one of the spacecraft's instruments used for steering and pointing. But the space agency has since fixed the problem, and the telescope will be back to observing the Universe by the end of the week.

[...] The glitch resulted in the gyro measuring three seconds of "bad data," which led Chandra's onboard computer to come up with the wrong value for the vehicle's momentum, according to NASA. This apparently prompted the safe mode. Now, NASA has decided to use one of Chandra's other gyros in its place and put the glitchy one on reserve.

Also at Space.com.

Previously: NASA's Chandra X-Ray Observatory Enters Safe Mode; Investigation Underway

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