Saturn
Every so often it makes headlines: Radio waves from Saturn sound like sound effects and music from a B movie. It’s true, too…sorta. For a variety of reasons, Saturn and many other planets (including Earth) are sources of completely natural radio wave emissions. Obviously us Earthlings are transmitting a fair amount of […]

Until now, all chemical rocket engines function essentially the same: spark off the reaction and hold on for dear life. You could redirect the thrust and, sometimes, turn it off entirely, however it was pretty much a light-switch type reaction. Although this certainly made it easy to calculate fuel use, it was also […]