As Chandra's instruments move into safe mode in a secure configuration that protects important hardware, the spacecraft uses its solar cells to get the optimum amount of sunlight, and the craft's mirrors show off the sun away. According to an official NASA statement, Chandra went into a safe mode consistent with "normal" or expected behavior.
The Space Agency did not disclose why Chandra entered Safe Mode, but all systems aboard the ship successfully transitioned and all of Chandra's instruments are safe and sound. NASA said last week that they are still investigating the reason for this sudden shift.
"Chandra is 1
The Space Agency adds that Chandra "will continue to conduct top scientific research for many years to come."
Problems with Hubble
As this investigation progresses, "NASA continues to work on the resumption of scientific operations of the Hubble Space Telescope after Friday, October 5, due to the spacecraft said an official NASA statement said
Earlier this month, the Hubble Space Telescope went from four working gyroscopes to just two fully functional gyros – while the telescope had two or more a gyroscope – the gyroscopes keep the telescope in the same direction for long periods of time – works Hubble is best with at least three rotors.
After this gyro failure, the Hubble operation team has turned on a backup gyro. Unfortunately, the backup gyro did not work successfully. Since then, the team has been testing the backup gyro, which continues to report false high speeds. This backup gyro can not report even Hubble's small moves.
An Anomaly Review Board was formed to find and fix the cause of these problems.
The Planet Hunt Kepler Space Telescope, low in fuel and near the end of its mission, began the month in safe mode. The astronomers have since put the spacecraft back into service and are working on downloading its latest data before it runs out of energy.