How many planets have been discovered on the keplers second mission as of 2017
A. Over 5000
B. Over 2000
C. Less than 2000
D. Around 5000
C. Other: ___
1 answer
C. Less than 2000
A. Over 5000
B. Over 2000
C. Less than 2000
D. Around 5000
C. Other: ___
1 answer