Chandra Is Now In Safe Mode Too

Chandra X-ray Observatory Enters Safe Mode; Investigation Underway

"At approximately 13:55 GMT on October 10, 2018, NASA's Chandra X-ray Observatory entered safe mode, where the telescope's instruments are put into a safe configuration, critical hardware is swapped to back-up units, the spacecraft points so that the solar panels get maximum sunlight, and the mirrors point away from the Sun. Analysis of available data indicates the transition to safe mode was nominal, i.e., consistent with normal behavior for such an event. All systems functioned as expected and the scientific instruments are safe. The cause of the safe mode transition is currently under investigation, and we will post more information when it becomes available."

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