Several surprising discoveries were made as astronomers began detecting exoplanets. Which statement is correct?
A. There are terrestrial planets larger than Earth.
B. Gas giants can orbit extremely close to their star.
C. Some exoplanets have extremely elliptical orbits.
D. All of these choices are correct.
E. None of these choices are correct.
Answer: D
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____________________ is responsible for absorbing ultraviolet radiation in Earth's upper atmosphere
Fill in the blank(s) with correct word
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A) 12 B) 15 C) 120 D) 1200 E) 3200
_________ is absorbed by water in Earth's atmosphere and requires that telescopes for observing at these wavelengths be placed on mountain tops or in space
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