The Enigma Machine was used during WWII by the German Army to get keep messages encrypted. It looks almost like a typewriter. There are 26 keys and 26 letters that can light up. These lights tell you how the keys will be scrambled up. The machine work...

Onboard the SpaceX Starship 2.0 in Detail - What it takes to go to Mars | Detailed Breakdown. The layout of the ship follows two guiding functional necessities, zero-G environment, and low gravity. Logically each floor must be designed to accommodate thes...