You’ve probably heard about NASA inventions, which help colonize and discover Mars. However, have you ever seen the same machines, but made of Lego’s details? Let’s look at them! First, try a flight of construction with a propeller, but without a powerful engine, isn’t it fantastic? Unfortunately, yes. Although the propeller works, it’s still cool. The next construction moves on 6 wheels and has on its “face” something that reminds me of a smile....