Why did NASA spend millions developing a pen that would work in space when a pencil is just as good?
They didn’t. The “million-dollar space pen” story is an urban legend that just refuses to die. Pencils aren’t “just as good” in zero-G; in fact, they’re absolutely terrible….
How do Russian fighters compare to US fighters? Is it true that most modern Russian jets cannot match up to older US planes like the F-15 and F-16, despite being built after the Cold War?
Yes, that’s generally true. However, it might not be for the reasons you’re thinking. Russian fighters are very maneuverable and can carry powerful ordnance. Many of them have…
If the universe is so big, why haven’t we encountered an advanced alien civilization yet?
Look at it like this. If there were intelligent life out there, how would they know about us? The only way is by monitoring radio transmissions. The first…
Is it true that the earth is round?
In 1989 I saw a slightly different proof that our earth is round 🙂 There are many ways to prove that our earth is round. But in 1989…
What are some scary facts about history?
One of the nastiest ways to die in the Middle Ages was toilet related. Because in medieval times, men of power and wealth made use of primitive toilets…