Top 10 Coolest Things You Probably Didn't Know

1. The existence of "rogue waves."

   Rogue waves are massive, unpredictable ocean waves that can appear suddenly in otherwise calm seas. These walls of water, sometimes reaching over 100 feet in height, were once considered maritime folklore, but have since been proven to exist through scientific measurement. The sheer power and unpredictability of these waves make them a terrifying and fascinating phenomenon of the ocean.

2. Honey never spoils.

   Archaeologists have discovered pots of honey in ancient Egyptian tombs that are thousands of years old and still perfectly edible. This is due to honey's unique chemical composition: it's low in moisture, high in acidity, and contains an enzyme that produces hydrogen peroxide, all of which create an inhospitable environment for bacteria and fungi.

3. The "Cosmic Latte" is the average color of the universe.

   In 2009, a team of astronomers analyzed the light from over 200,000 galaxies to determine the average color of the universe. The result wasn't what they expected: a beige hue, which they dubbed "Cosmic Latte." This color represents the combined light of all the stars and galaxies in the observable universe.

4. There are more trees on Earth than stars in the Milky Way.

   It's easy to think of stars as being countless, but recent estimates suggest there are around 100-400 billion stars in our galaxy. Meanwhile, a 2015 study published in Nature estimated the number of trees on Earth to be around 3.04 trillion. This staggering number highlights the sheer abundance of life on our planet.

5. A single teaspoon of neutron star can weigh six billion tons.

   Neutron stars are the incredibly dense remnants of massive stars that have collapsed under their own gravity. Their density is so extreme that a teaspoonful of neutron star material would weigh as much as a mountain on Earth. This mind-boggling fact gives us a glimpse into the extreme physics of these cosmic objects.

6. Your brain produces enough electricity to power a small light bulb.

   The human brain is an incredibly active organ, with billions of neurons constantly firing and communicating with each other. This electrical activity, while small, is enough to power a low-wattage LED light bulb. It's a testament to the sheer power and complexity of the human brain.

7. Diamonds aren't the hardest substance.

   While diamonds are famously hard, they aren't the absolute hardest substance known to science. Materials like aggregated diamond nanorods and lonsdaleite are theoretically harder, and some lab-created materials, like boron nitride, can also scratch a diamond.

8. The Earth's core is hotter than the surface of the sun.

   The Earth's core is a ball of solid iron and nickel, and it's incredibly hot, reaching temperatures of around 5,200 degrees Celsius (9,392 degrees Fahrenheit). This is hotter than the surface of the sun, which has a temperature of around 5,500 degrees Celsius (9,932 degrees Fahrenheit).

9. There are "rivers" of lava on the ocean floor.

   While we often think of rivers as flowing water, there are actually rivers of lava flowing on the ocean floor. These submarine lava flows, created by underwater volcanic eruptions, can travel for miles, creating unique geological formations and supporting unusual ecosystems.

10. Some animals are immortal.

    Okay, not in the traditional sense, but the Turritopsis dohrnii jellyfish can revert back to a juvenile state after reaching adulthood. This process can repeat indefinitely, effectively making it biologically immortal. This remarkable ability has fascinated scientists and opened up new avenues of research into aging and regeneration.