Ten unpopular knowledge in science, how much do you know

Although we live in a scientific society, there are many truths that scientists dare not announce. Although we are quite happy with current Earth, we have not yet found another planet in universe that could support our human existence. But there are still many creatures on this earth that make us think and fear, and creatures that are completely different from scientific knowledge that we have studied before.

The truth that world's top ten scientists dare not tell

1. There are only 23 hours 56 minutes and 4 seconds in a day

We often complain that we don't have enough time, but it's true, because there are not 24 hours in a day, but 23 hours 56 minutes and 4 seconds, which is actual time it takes Earth to rotate on its axis. axis, also known as sidereal day. The solar day, that is, time it takes to see sun twice at same point on meridian, will vary by as much as 16 minutes per year depending on orbital position - this is a truth that scientists dare not declare. This leads us to mistakenly believe that there are actually 24 hours.

2. The mass of Earth is about 60 trillion tons

Give me a lever and I'll lift ground. We used to think it was impossible, but now if you know mass of Earth, it becomes possible. After all, we cannot do more massive things with Earth due to gravity, but British scientist Henry Cavendish said that quality of earth is reduced , and she is known as "the first man on earth." This is also a truth that scientists do not dare to divulge, and it is impossible to know if these data are correct.

3. Mount Olympus on Mars is 27 km high

We all know that Mount Everest is highest mountain in world, but if you compare Mount Olympus with Mars, Mount Everest seems worthless, so scientists do not dare to publish truth. Olympus Mons has a height of 27 kilometers, which is almost three times height of Everest and twice height of Mauna Kea (calculated from foot of mountain). Mount Olympus rises in Martian atmosphere, and its base is 550 kilometers wide, which means that if you stand in crater, then its sole will go beyond horizon.

4. Comet Size

We all know that there are many comets in universe, but you may not know their sizes. Well, if you compare Los Angeles (LA) with a comet...

5. Number of artificial satellites

We all know that there are many artificial satellites, but did you know that there are so many?

6. The actual size of Pacific Ocean

Did you know that Pacific Ocean is actually bigger than you think?

7. Distance between Earth and Moon

The distance from Earth to Moon seems very short, but it can already accommodate all planets of solar system, and this is as much as 384,400 kilometers.

8. Jupiter Volume Comparison

Jupiter is not small, but it is too far away from us. But if Jupiter were as close to us as Moon, we would see... just not enough heart! It's scary to look at sky!

9. Jupiter's gravitational effect

And every day that we live, we are actually thanks to Jupiter, because it is Jupiter that keeps trajectory of meteorites from Earth.

10. Comparison of volume of water on Earth

On left is amount of water on Jupiter's moon Europa, and on right is amount of water on Earth.