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Question 1:
What characteristics make the Hubble Space Telescope a leading, state-of-the-art observatory?
Answer:

The Hubble Space Telescope is the first visible-light telescope in space. A space-based observatory provides data and images that are free from the blurring effects of Earth’s atmosphere. The team that built the telescope designed it with periodic servicing in mind. Delivering new instruments and operating parts to the telescope allows it to remain a state-of-the-art observatory.

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