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44 votes
1 answer
9k views

How (the heck) did Lunokhod 2 drive, navigate and survive a ~40 kilometer drive over four months on the Moon using 1970's technology?

Mashable.com's Every rover, ranked by distance traveled on the moon and Mars; The 13 rovers, ranked. calls attention to this amazing feat, and a review of basic statistics and discussions on odometry ...
22 votes
3 answers
8k views

Could 3D printing be used to achieve perfect grain geometry of solid and hybrid rocket motors?

Solid cores, either for solid-fueled of hybrid rocket motors, use various propellant grain geometries to achieve thrust curve needed. For example, some of these could look like:    &...
4 votes
2 answers
156 views

Lessons Learned - What can space power system design teach Antarctic remote sensing systems

I know that a lot of brilliant engineering has gone into developing the space technology that we have. So, what engineering lessons about dealing with extreme cold and portable power sources do you ...
9 votes
1 answer
439 views

Why have space stations become less volume-efficient despite technological progression?

If you compare the pressurized volume of all the space stations launched to their mass, their volume-efficiency (in this context volume divided by mass) seem to decrease over time. In chronological ...
13 votes
4 answers
3k views

Realistic space battle, how it could looke like? No hollywood version or videogames like [closed]

I am about to program space exploration simulation game in the future, but I need to consider many factors. I would like to be as much realistic as possible, but keeping the game playable as well and ...