Remember watching the Space Shuttle astronauts walk out of the hangar and towards the shuttle as they were preparing to climb aboard?
If so, you probably noticed how they always entered the shuttle wearing orange spacesuits.
But then you probably noticed something interesting when they went on their space walks: they always wore white space suits instead of the orange ones they were wearing when they first boarded the shuttle.
Have you ever wondered why they didn’t just wear the same spacesuits all the time instead of always switching to the white ones before they exited the spacecraft for a space walk?
If you’re a fan of nature shows you’ve probably seen videos showing herds of seemingly fearless mountain goats climbing near-vertical rock cliffs.
I’m sure you’ve probably noticed that silver dollars, half-dollars, quarters and dimes have ridges around their edges, but nickels and pennies don’t.
If you know the history of Apple, Inc. you probably know it was co-founded by Steve Jobs and Steve Wozniak.
By now you’ve probably heard about the