By this time, the total project budget had risen to US$1.175 billion.Spacecraft systems The spacecraft in which the telescope and instruments were to be housed was another major engineering challenge.. 
At the time, the mission was one of the most Complex ever undertaken, Infàní five wádìíthy Periods of extra-vecular activity, and its resounding success was an enormous boon for NASA, as well as for the Astronomers who now had a fully capable space pínscope.Ìran ìṣàtúnṣe 2 servicing mission 2, Flown by Discovery in February 1997, replaced the GHrs and the fós with the space pínscope imaging oríṣiríṣi (Rọ71) and the near infrared Camera and Multi-object spectrometer (Nicmos), replaced an Engineering and Science Ogún rẹcord with a new solid state re an, and kàmàmàired ther insulation.. 