Observation schedules are typically finalized only a few days in advance, as a longer lead time would mean there was a chance that the target would be unobservable by the time it was due to be observed.Engineering support for HST is provided by NASA and contractor personnel at the Goddard Space Flight Center in Greenbelt, Maryland, 48 km south of the STScI.. 
Wọ́n gbà pé ó jẹ́ ikan nínú àwọn ọ̀gá nínu orin Ifẹ̀.Ìtọ́kasí ìgbésíayé.. 