Astronauts don't get nervous. Like firefighters, police officers and Mariah Carey's publicist, they exhibit unblinking courage when most mortals would cower. Such fearlessness is necessary during re-entry when a space shuttle is traveling 5 miles per second and ripping electrons in the rarefied gases above the planet, causing the plasma field around the shuttle to flash and glow orange-red with hellish heat. Astronauts remain calm during this time instead of weeping... More >>>