Which telescope, launched in 1990, was the first major optical telescope to be placed in space, free from atmospheric distortion?

The history of astronomy has been shaped by technological breakthroughs in observational equipment. One particular product innovation revolutionized our understanding of the cosmos and continues to influence how we explore the universe today. Test your knowledge about a pivotal moment in astronomy product development that transformed the field forever.

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Hubble Space Telescope
James Webb Space Telescope
Spitzer Space Telescope
Chandra X-ray Observatory