Scientists Fixing Hubble Contend With Antiquated Computers

This full-size mock up of the Hubble Space Telescope's computer system, is where NASA astronauts train before going up to work on the telescope, and where Goddard Space Flight Center scientists test their theories about how to fix Hubble. (Photograph courtesy of NASA)

From Popular Mechanics:

NASA scientists trying to find out what went wrong during last week's repair of the Hubble Space Telescope find themselves dealing with 486 processors and other outdated computer technology. But sometimes, mission managers say, simple is good when you're out in space—as long as you know how to talk to decades-old computers.

The Hubble needs service—again. The space telescope has beamed gorgeous images of the universe down to Earth for 17 years and has undergone four servicing missions by space shuttles. A September 27 failure in the Science Data Formatter pushed back a planned fifth and final servicing mission aboard the space shuttle Atlantis from this month until February 2009. While trying to switch over some of the telescope's electrical systems to redundant backup versions remotely, the team at NASA's Goddard Space Flight Center in Maryland hit two anomalies that caused the telescope to enter "safe mode" and stop most science operations. Goddard scientists think they have found the cause, and hope that operations will resume this weekend. But perhaps finding a few problems should come as no surprise—not only have Hubble's backup systems sat idle for 18 years, but the telescope operates with computer systems long outdated here on Earth.

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