Diamonds

5 years ago was the first flight. The time between that flight and the first moon landing was only 66 years. This past year NASA had a helicopter that flew on Mars. That little helicopter had a scrap of canvas from that first Wright brothers plane on it. Imagine what will occur in the next 66 years, in 2090 or, in 122 years, in 2144. We can imagine some things but we’d be wrong about most things.

Something we didn’t know just a few years ago was the makeup of other planets and asteroids. Today we know, for example, that one thing that is very plentiful in the universe, is diamonds. Diamonds...