NASA launched the Hubble Telescope. It didn't work for a month due to an error

Researchers from NASA were able to restart the legendary Hubble telescope, which has not worked since June 13 due to

computer failure.As it became known to the publication Science, after over the past 24 hours, Hubble operators have switched from a working payload control computer to a backup device, they have restored communication with all devices and plan to return them to normal operation.

Tom Brown, Head of the Hubble Mission Office, sentan email with the words "Hubble is back!" to the staff of the Scientific Institute of the Space Telescope. “I look forward to when Hubble will return to exploring the Universe,” the letter says.

Problems with the device began on June 13th whenthe payload computer, which controls and monitors scientific instruments, noticed a communication error with the instruments and put them into safe mode. The Hubble operators initially thought the memory module was defective, but switching to one of the three redundant modules resulted in the same error. They are researchers and other devices, but it turned out that they were working properly, and the error persisted.

NASA discovered the most likely cause of the breakdown of the Hubble

As a result, the researchers switched the entire blockcontrol of scientific instruments and data processing (SIC & DH) from a working device to a standby one. Over the past week, staff practiced this procedure on ground equipment, and then conducted a full analysis to make sure it can be done without damaging the telescope.

Shortly before the switch, NASA announced thatThe source of the problem is the Power Control Unit (PCU), which is part of the SIC & DH. The PCU is supplying DC voltage to the payload computer and it was either supplying voltage outside the normal range, or the voltage sensor was giving erroneous readings. Since the SIC & DH has a spare PCU, the researchers were able to make a replacement.

Scientists reported this morning that they were able to bring the Hubble back to normal on the A side of [SIC & DH]. " If the telescope behaves normally in the coming days, it will resume scientific observations.

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