50 Years of Human Space Exploration. This is by far the coolest pin I will see tonight. So amazing as to how far the space exploration campaign(s) has come since we first step foot into the putter abyss!
Fly wheels, such as the NASA G2 flywheel module above, are one way to store rotational energy for use by spacecraft or machines on Earth. NASA’s looking for new energy storage systems to enable our future exploration missions. Image Credit: NASA