There are three different badges a U.S. Soldier can earn for the GAFPB: bronze, silver and gold. To earn the badge the Soldiers had to pass four stations: a timed 100-meter swim while dressed in ...

A hexagon bounds Saturn’s northern polar vortex. And Martian vortices act similar to Earth’s, spinning to life each winter, but with a difference: instead of a beanie-shaped covering atop the ...