Multiple Choice
What type of observation can astronomers use to measure the composition of extrasolar planet atmospheres?
A) measurements of the host star's velocity throughout an orbital cycle
B) comparisons of spectra when planets are in front of or are eclipsed by their host stars
C) combination of a transit observation and a Doppler shift measurement
D) measurement of how frequently the planet blocks the host star's light
Correct Answer:
Verified
Correct Answer:
Verified
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