11.   The telescope needs a minimum of three of its six gyroscopes operating to make astronomical observations, and had been limping along on three of the devices since February.

12.   Astronomical observations were to begin Friday.

13.   It was expected to take the crew all day to activate and align the three telescopes, with astronomical observations beginning early Friday.

14.   Music played an integral role, perhaps combined with astronomical observations and other rituals that helped to rule their society, they said.

15.   One more failure and astronomical observations will cease, although the telescope itself will be safe in orbit.

16.   French researchers will focus powerful lasers into night skies here over the next ten days in experiments aimed at refining technology for astronomical observation.

17.   Libya already announced on Saturday that the three-day feast would start on Tuesday, based on the lunar calculation of its astronomical observation centre.

18.   That should make the turbulent layer thinner, improving, in turn, the quality of potential astronomical observations....