Klerksdorp spheres, winners of the fiercely competitive "least sexy name in geology" award, are small, rounded, disc-shaped rocks found in a single mine in South Africa. They're described as being perfectly concentric, hard as steel and balanced to a degree that not even NASA can calculate. In fact, NASA has allegedly said that they could only have been constructed in a zero-gravity environment. Also, they've been carbon-dated as being nearly 3 billion years old. Speculation about their creators ranges from an ancient but unspeakably advanced ancestor of humanity to aliens to the followers of the Mighty Klerksdorp, He Who Devours.
Made from the remains of his victims, presumably.
We should start by saying that they're not perfectly round: Many are disc-shaped, and they're often intergrown with other stones. They're not as hard as steel, either. Steel's hardness varies depending on alloy, and Klerksdorp spheres are by no means unnaturally hard (tee hee!). They rate about 4 or 5 on the Mohs scale, which is only about halfway up the chart, far below steel's 6 or 7. Also, NASA has never examined them: That's Internet bullshit tacked onto the original information. That's what the Internet does -- you get a free bonus prize of Stupid Lies with every box of Delicious Facts.
"Can be eaten as part of a healthy lifestyle. Massively unsuitable for children."
However, the fact that they're 3 billion years old is true. Klerksdorp spheres are actually the product of a completely natural process known as concretion. Basically, they're just plain old sedimentary rocks that happen to look cool. Don't thank aliens -- thank good old Mother Nature.
For the love of God, do it, or she'll sic Australia on you.
Ball lightning is kind of like regular lightning, only in convenient travel-ready ball shape. People have been seeing the stuff since the 17th century. There's even some speculation that UFOs are actually misidentified ball lightning. The phenomenon is frequently described as traveling through solid matter, like walls, and has actually killed people. But what is it? Is it just regular lightning with a childlike sense of play? Did God lose his bouncy ball? Is it the disembodied, roving testicle of Thor? It's totally that last one, isn't it?
Photos that show the phenomenon in action certainly have the same picture quality as ancient porn anyway.
In 2007, Brazilian scientists discovered that passing large amounts of electricity through a silicon wafer creates a vapor that, once cool, condenses into an aerosol that glows when recombining with oxygen. The result is tiny balls of electricity that "move erratically about the lab, rolling around on the floor, bouncing off objects, and burning whatever they touch."
The only scenario imaginable where it's kind of badass to wear sandals.
You can watch a video of it right here. Those scientists now think that ball lightning occurs when regular lightning strikes ground rich in quartz, or silica (like you find in sand). Other scientists have agreed with the Brazilian group's findings, including John Abrahamson of the University of Canterbury in New Zealand, who said, "Their balls are of sufficient duration and size to enter the mainstream ... seen in nature." Immediately followed by "What? What did I say? What's so funny? Guys?"