Which telescope's 1990 product launch represented the most significant innovation in making space observation accessible to both scientists and the public, despite initial technical problems?

The astronomy industry has seen remarkable product innovations that revolutionized how we observe the cosmos. One particular telescope launch transformed both professional astronomy and the consumer market for stargazing equipment. This poll tests your knowledge about a pivotal product innovation moment that redefined astronomical observation for both scientists and hobbyists. Do you know which telescope's release represented the most significant product innovation breakthrough of its era?

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Hubble Space Telescope
Keck Observatory Telescopes
Very Large Array (VLA)
Compton Gamma Ray Observatory