10 Real Science Facts That Sound Fake
Here are 10 facts that sound made-up — but are 100% real, backed by science.
1. Bananas are naturally radioactive
Because they contain potassium-40, a radioactive isotope. Don’t worry — you’d have to eat millions to be harmed.
2. A day on Venus is longer than its year
It rotates so slowly that one full spin takes 243 Earth days. But it orbits the Sun in 225.
3. Octopuses have three hearts and blue blood
Two pump blood to the gills, one to the body. Their blood contains copper, not iron — that’s why it’s blue.
4. Water can boil and freeze at the same time
It’s called the «triple point» and happens only at very specific temperature and pressure levels.
5. Humans glow in the dark
Bioluminescence in humans exists — but it’s 1,000 times too dim for our eyes to see.
6. There are more stars in space than grains of sand on Earth
By far. It’s estimated to be around 1,000,000 stars per grain.
7. Some metals explode in water
Like cesium and rubidium. Just a drop of water and BOOM.
8. Tardigrades can survive in space
These microscopic creatures can handle extreme radiation, heat, cold — and even the vacuum of space.
9. Sharks existed before trees
They’ve been around for more than 400 million years.
10. The Eiffel Tower grows taller in summer
Due to thermal expansion, it can grow by about 15 cm in the heat.
More weird facts coming soon on BrainZapFacts!
