Didn't want to know?! Fascinating and scary trivia & fun facts
Even though we think we don’t want to know scary stories, our curiosity tends to win and we end up watching or listening anyway, right? In this article, we’ve collected general-audience scary trivia and fun facts—the kind that gives you chills but you just can’t stop reading.
Some of it might make a few people regret seeing it a little, but there’s also plenty that’s good to know.
If you’re the type who wants to be informed—about the good and the bad—then follow your curiosity and check it out!
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Scary Trivia About Earth, Space, and Life (11–20)
There are wandering isolated black holes in space.
Black holes that swallow even light are thought to be transformed remnants of stars and are most often part of binary systems.
However, defying that common understanding, astronomers have also discovered black holes wandering alone through space.
The fact that these fearsome objects—often portrayed as symbols of terror in space-themed science fiction—can move freely only heightens their menace.
Because they emit no light and are therefore difficult to detect, this discovery also raises the possibility that black holes may be found in unexpected places in the future.
In the deep sea, there is a giant worm-like creature called the “Hikariboya.”
The deep-sea “pyrosome” is a giant, tube-shaped organism that may look like an earthworm but is an entirely different kind of creature.
It is formed by a multitude of tiny individuals called zooids, each only a few millimeters long, which gather to create large, hollow cylindrical or sac-like colonies.
Sizes range from just a few centimeters to several meters, with some exceeding 10 meters, making them appear like truly “giant worms.” A distinctive feature is their strong blue-green bioluminescence when stimulated.
Embryos of the sand tiger shark cannibalize each other in the mother’s uterus.
The sand tiger shark has a very unusual way of reproducing.
It practices intrauterine cannibalism, a rare strategy in which only the strongest pup survives to be born.
It’s said that amid this harsh competition, one pup from each of the left and right uteri is born, for a total of two.
A distinctive feature is that newborns are already about 1 meter long, larger than those of many other sharks.
After birth, they grow while staying in safe areas and preying on items like shells and small fish.
Sand tiger sharks are born only after winning intense competition.
The temperature of lightning is hotter than the surface of the Sun.
We tend to think of the sun as something unreachable out in space, and lightning as something we might encounter in everyday life—separate things that are far apart.
Surprisingly, though we rarely compare them side by side, it’s said that lightning can be hotter than the sun’s surface.
The sun’s surface temperature is about 6,000°C, while lightning is reported to reach roughly five times that—around 30,000°C.
Unlike the ever-burning sun, lightning is a brief phenomenon, but the fact that it can bring heat more intense than the sun’s surface is truly frightening.
Whales can sometimes explode after they die.
When news breaks that a whale carcass has washed up on a beach, you might picture people hurriedly returning it to the sea.
A major reason for this is the risk that the carcass could explode.
This isn’t an explosion from combustion but more like a rupture: as the body decomposes, methane gas builds up, causing it to bloat and then burst violently.
Because whales are so large, the range and impact of such an explosion can be extensive, so the carcass is returned to the ocean, as far from land as possible, to minimize the effects.
Since any damage to the body could trigger a rupture from that point, the work is carried out with great care.