🌕The observatory is the first major optical telescope to be placed in space and has made groundbreaking discoveries in the field of astronomy since its launch (into Low Earth orbit in 1990).
🌕It is said to be the “most significant advance in astronomy since Galileo’s telescope.”
🌕It is a part of NASA's Great Observatories Program - a family of four space-based observatories, each observing the Universe in a different kind of light
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