NASA found out why the Hubble Telescope was closed, there was a problem with the computer
The Hubble Space Telescope of NASA and ESA was running bad for the last one month, now scientists have come to understand the rationale.
The Hubble Telescope of NASA and European Space Agency therefore (ESA) is currently the foremost powerful astronomical telescope within the world. For the past several years, Hubble has given a number of the best and delightful pictures of the universe, many of which have given information that Earth's telescopes cannot achieve. But on June 13, there was a controversy with this telescope. But now NASA has come to grasp about the pc problem because of which the Hubble telescope was close up.
It has been found that the telescope and its other scientific instruments are completely safe and there has been no defect of any kind, even there's no error in their configuration and it's completely safe. This error is within the payload computer which resides within the Science Instrument Command and Data Handling (SI C&DH) unit. It controls and coordinates Hubble's scientific instruments likewise as monitors them.
When the payload computer stopped working, all of Hubble's instruments automatically went into a secure configuration. After several days of testing, including attempts to reconfigure the pc and its backup computer, in addition as restart it, it had been unsuccessful, but the knowledge provided helped the Hubble team to search out out. Found that the foundation of the matter was within the Power Control Unit or PCU.
The PCU also resides within the SIC&DH unit. Its job is to confirm that the payload element is continuously furnished the identical voltage. The PCU incorporates a power regulator that continuously supplies 5 volts to the payload computer and its memory.
In addition, a secondary protection circuit (SSC) senses the voltage levels emanating from the ability regulator. If the voltage is higher or lower, this circuit tells the payload computer that it should cut off. The team's analysis revealed that either the voltage across the bar from the regulator had exceeded acceptable levels, tripping the secondary protection circuit. instead this circuit got damaged over time causing it to induce stuck during this condition.
The problem is that the PCU can't be reset by giving any instructions from the world. The Hubble team will now concentrate on the backup portion of the SI C&DH which contains the backup of the PCU. every kind of reviews are in serious trouble this alteration and NASA management has also given green signal for it. this alteration will start on July 15 and if successful, it'll take several days to revive normalcy.
The Hubble team has done such a change within the year 2008. within which the Command Unit / Science Data Formatter module, part of SI C&DH itself, had malfunctioned. At that point, within the 2009 servicing operation, onthe whole SI C&DH unit was replaced, including the CU/SDF module.
After Hubble was launched in 1990, it's been observing the universe for 31 years, which has 1.5 million observations and about 18 thousand scientific papers are issued using its data. It includes the expansion of the universe, the evolution of the galaxy, atmospheric studies of planets outside the scheme.