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Question 4:
In what ways was the use of the Hubble Space Telescope unusual?
Answer:

This is the first time that scientists have used Hubble to support human space exploration. Hubble does not usually take images of the Moon because the Moon moves across the sky very quickly, making it difficult for Hubble to follow its path. The Moon also is very dim in ultraviolet light, so Hubble had to look at the Moon for a long time to capture the light reflected from the minerals.

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