According to foreign media reports,The Hubble telescope may have just been repaired, but NASA immediately restored the iconic space telescope to work and shared the latest images of distant galaxies.For Hubble, this was an unplanned downtime month, because in mid-June, after the payload computer that managed the telescope shut down, observations suddenly stopped.
Apple’s “Back to School Offer”: Mac, iPad and AirPods are also available for 20% discount on AppleCare+
Given that Hubble now has more than 30 years of history, failures can be expected. Despite this, the NASA Goddard Space Flight Center in Greenbelt, Maryland, the team responsible for managing the telescope encountered a tricky problem because it is impossible to repair Hubble in person. Instead, they came up with a complicated method of switching to an onboard backup computer and performed a dangerous operation on July 16 (Friday). This went well, and on Saturday afternoon, Hubble began taking unprecedented pictures of nearby galaxies.
When talking about the return of the telescope, NASA Director Bill Nelson said: “I am very happy to see Hubble look back at the universe and once again capture the kind of image that has made us curious and inspiring for decades. This It is a time to celebrate the success of a team that is truly committed to this task. Through their efforts, Hubble will continue its 32nd year of discovery, and we will continue to learn from the transformative vision of the observatory.”
As for what Hubble has turned its observations on, with the scheduled tasks of the past month now being put on the agenda, two unusual spiral galaxies have become the top tasks of its to-do list. ARP-MADORE 2115-273-the left image in the above image-is a pair of interacting galaxies in the southern hemisphere, a configuration that is rarely observed. ARP-MADORE0002-503-on the right side of the image above-at the same time, is another spiral galaxy, but it has both extended spiral arms and three spiral arms, both of which are rare.
They are the subject of an ongoing project by Julianne Dalcanton of the University of Washington in Seattle. NASA said Hubble also photographed the aurora of globular star clusters and giant planet Jupiter this weekend.
Since Hubble launched as early as 1990 and has been developing it in the previous years, there are a large number of engineers, scientists, and other personnel who have participated in the space telescope project, but they have since changed careers or retired. In the past month, this proved to be a valuable resource, as NASA is working to find out what caused Hubble to switch to its protective safety mode and stop observing, and how to fix it.
NASA explained: “Hubble’s alumni have come back to support the current team’s recovery work and provided decades of mission expertise. For example, the retirees who helped build the telescope know the ins and outs of scientific instruments and command and data processing units. This unit is where the payload computer is located-this is essential for determining the next step of recovery. Other former team members searched for Hubble’s original documents and revealed documents from 30 to 40 years ago to help the team plan forward. path of.”
Their collective discovery is that the challenge of resuming scientific work will be much harder than just turning Hubble’s computer back on. Goddard spent 15 hours waking up the replacement computers and transferring operations to them safely, instead of just throwing a switch to flip to the backup system.
Goddard’s Deputy Hubble Project Manager Jim Jeletic explained: “The main computer must be shut down, and a backup safe mode computer temporarily takes over the spacecraft. Several boxes must also be opened. These boxes have never been in space before. Has been opened, and other hardware needs to switch their interfaces.”
Meanwhile, another NASA team is preparing a new instrument, the James Webb Space Telescope, for launch later in 2021. It is more powerful than Hubble and capable of observing different wavelengths. It is expected to open new insights into distant galaxies and help understand factors such as the evolution of stars, the formation of black holes, and other factors that contribute to the evolution of the universe.