A brain teaser showing if you know the basics of being an astronaut!
4.1 Billion
4.6 Billion
5.3 Billion
6.1 Billion
5.7 Billion
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23
25
22
11
12
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135 days
130 days
153 days
137 days
198 days
2018
2014
Doomsday
2019
2016
2000 miles
2030 miles
2789 miles
3874 miles
4029 miles
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2
3
4
1
None of the Above
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5
12
13
17
16
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True
False
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