After the launch of the Hubble Space Telescope in 1990, it has become the most important instrument in astronomical history.
Beijing time on November 16th news, according to foreign media reports, the National Aeronautics and Space Administration (NASA) Hubble Space Telescope should be able to resume work soon. According to NASA, on October 5th, EST, the Hubble telescope entered a protective “safe mode” due to a gyroscope that remained in the direction of the gyroscope. The mission team tried to enable the standby gyroscope, but the telescope has not been working properly so far, and the abnormal data is sent back.
NASA officially stated in an update on October 12 that the Hubble telescope team called an “abnormal review committee” to thoroughly check the failure to determine if it could be fixed.
The Hubble Space Telescope has six gyroscopes for aiming and maintaining its stability. In 2009, NASA astronauts replaced all gyroscopes while walking in space. As long as three gyroscopes are working properly, the Hubble telescope can be kept at maximum efficiency. Today, three gyroscopes have failed, and two of the other three gyroscopes are functioning properly and one has failed. Therefore, enabling an alternate gyroscope would be a good choice, but NASA officials say this is not absolutely necessary.
“If the mission team succeeds (with spare parts) to solve the problem, the Hubble telescope will return to normal, and 3 gyroscopes will work normally,” NASA said in the 12th update, “If it can't be solved, Hubble telescope It will be set to the state in which one gyroscope is working. It will continue to provide us with outstanding scientific data until the 2020s, when it will work with the James · Webb Space Telescope to continue to bring breakthrough scientific discoveries. ”
That is to say, if there are only two working gyroscopes in the end, it will be changed to the working mode of a single gyroscope, and another gyroscope that works normally will be used as a backup.
The Hubble Space Telescope was launched into Earth orbit by the Space Shuttle Discovery in April 1990. Today, the Hubble telescope has become one of the most important instruments in astronomical history. However, the pictures sent back by the Hubble telescope were not as clear as expected, and apparently did not achieve the best focus and image quality. After analyzing the pattern defects, astronomers found the root of the problem was the tiny flaws on the main mirror. This problem was solved in 1993, and the astronauts equipped the Hubble telescope with a correction mirror during the maintenance mission. Later, in four additional maintenance missions, the astronauts also maintained and upgraded the Hubble telescope. The replacement of the gyroscope occurred in the most recent maintenance mission in May 2009.
The Hubble Space Telescope was originally designed to collect at least 15 years of data, so as of now, this highly symbolic instrument has nearly twice the life expectancy. In 28 years of orbital operations, the Hubble telescope helped astronomers make many breakthrough discoveries and photographed countless stunning cosmic optical images.
The Hubble Space Telescope and the Compton & Gamma; Ray Observatory, Chandra X-ray Observatory, and Spitzer Space Telescope are all part of the NASA Large Orbital Observatory program. The Hubble Space Telescope is currently managed by NASA and the European Space Agency (ESA).