The criteria to become an astronaut has evolved over the years, but it’s still one of the toughest jobs to land. 18,000 people applied to be a part of NASA’s most recent astronaut class and only 12 were selected. In this episode, we’ll explore how the right stuff has changed with the times and get a taste of what candidates go through to make the cut.
It's 5 o'clock somewhere on Mars!
No human has ever set foot on Mars, but scientists have been working there for years. A day on the red planet is about 40 minutes longer than here on Earth, which wreaks havoc on your workweek.