Space Exploration

Notable Question

 Notable Question
Question with 2,500 views. This badge can be awarded multiple times.

earned this badge 3 times.
What are the small crosses on space pictures, and what's their purpose?
Awarded Sep 30, 2018 at 18:15
What are the main problems with magneto plasma dynamic (MPD) thrusters?
Awarded Jul 3, 2017 at 18:09
Which astronaut travelled farthest from Earth?
Awarded Feb 23, 2016 at 18:19

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