Professor Stephen Hawking died on March 14 at the age of 76. Hawking's contributions to science centered on his search for a unified theory of the universe, but his impact spanned far beyond the scientific community. 

"Eject, eject, eject!" Most of us are experienced at bailing out of social situations, but what about airplanes? Fewer than 1 percent of military pilots ever pull the eject handle, but they all know what comes next. The canopy blows, and the pilot is (literally!) rocketed up and out. Now what?

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.