Officials had hoped to have the 18-year-old observatory back in business Friday, after it stopped sending pictures three weeks ago. But a pair of problems cropped up Thursday, and now recovery operations are on hold.
On Wednesday, NASA began the lengthy steps of restoring data transmission. Everything was going well, until late Thursday afternoon.
Because of the breakdown, NASA delayed its final Hubble repair mission by shuttle astronauts that was set for October. The mission won't happen until at least February, possibly later.