Skip to main content
  1. Home
  2. Space
  3. News

Hubble woes continue as NASA prepares to switch to backup hardware

By
The Hubble Space Telescope is deployed on April 25, 1990 from the space shuttle Discovery. Avoiding distortions of the atmosphere, Hubble has an unobstructed view peering to planets, stars and galaxies, some more than 13.4 billion light years away.
The Hubble Space Telescope is deployed on April 25, 1990 from the space shuttle Discovery. Avoiding distortions of the atmosphere, Hubble has an unobstructed view peering to planets, stars and galaxies, some more than 13.4 billion light years away. NASA/Smithsonian Institution/Lockheed Corporation

The computer problems plaguing the Hubble Space Telescope have continued this week, with NASA preparing to switch over to backup hardware in order to fix the issue.

Hubble’s problems began in June, when the payload computer which controls the scientific instruments on the orbiting telescope went offline. When this happened, all of the instruments automatically went into safe mode, which means that they should all still be healthy and functional, but they aren’t currently collecting data.

Recommended Videos

The NASA team on the ground went through several rounds of attempting fixes, trying to zero in on what exactly was causing the problem. The latest update from NASA confirms that the problem is in a unit called the Science Instrument Command and Data Handling (SI C&DH), within which there are several pieces of hardware which could be responsible for the failure.

Related

NASA describes the next steps in an update: “The team is currently scrutinizing the Command Unit/Science Data Formatter (CU/SDF), which sends and formats commands and data. They are also looking at a power regulator within the Power Control Unit, which is designed to ensure a steady voltage supply to the payload computer’s hardware.”

If either of these systems turns out to be the problem, then the fix would be to switch from the existing units to the backups. Most of the Hubble hardware has both primary and backup versions, so that the team can switch from one to the other if something goes wrong with any piece of hardware. However, switching to backup units can be a complicated process. Because of the way the systems are connected, several pieces of hardware must also be switched off before the backup CU/SDF or power regulator can be switched over.

The team is preparing for switching to backup hardware this week, including testing out the switching process using a simulator. The good news is, this isn’t the first time such a procedure has been performed. “The team performed a similar switch in 2008, which allowed Hubble to continue normal science operations after a CU/SDF module failed,” NASA wrote. “A servicing mission in 2009 then replaced the entire SI C&DH unit, including the faulty CU/SDF module, with the SI C&DH unit currently in use.”

Editors’ Recommendations

Topics
Georgina Torbet
Georgina Torbet
Space Writer
Georgina has been the space writer at Digital Trends space writer for six years, covering human space exploration, planetary…
NASA reveals date for attempted return flight of troubled Starliner
Boeing's Starliner spacecraft docked at the space station.

NASA is targeting Friday, September 6, for the return flight of Boeing Space’s troubled Starliner spacecraft, the agency revealed on Thursday.

The vehicle will come home from the International Space Station (ISS) nearly three months later than originally planned and without the crew that it arrived with. The flight, the outcome of which could determine the Starliner’s future, is expected to take about six hours, NASA said in a blog post on Thursday.

Read more
NASA answers all of your questions on the troubled Starliner mission
Boeing's Starliner spacecraft docked at the space station.

NASA has updated an FAQ page on its website with the latest information on the state of Boeing Space’s beleaguered Starliner mission.

With so much speculation surrounding the state of the spacecraft, the page offers a definitive guide on where the mission is at right now.

Read more
NASA’s axed moon rover could be resurrected by Intuitive Machines
An illustration of NASA's Volatiles Investigating Polar Exploration Rover (VIPER) on the lunar surface.

Lunar scientists were shocked and dismayed last month when NASA announced that it was canceling work on its moon rover, VIPER. The Volatiles Investigating Polar Exploration Rover was intended to search the moon's south pole for evidence of water there, but NASA said that it had to ax the project due to increasing costs.

This week, an open letter to Congress called the cancellation of the mission "unprecedented and indefensible," and questioned NASA's assertion that the cancellation of the mission would not affect plans to send humans to the moon. Scientists argued that the mission was fundamental to understanding the presence of water on the moon, which is a key resource for human exploration, as well as an issue of scientific interest.

Read more