Top Ten Mind Blowing Facts About the Universe

Our observable universe is one of the most fascinating things to talk and think about. Here, I will be listing some facts about our universe that just blew my mind.
The Top Ten
1 The Earth is actually very small.

I know, it's a piece of dust inside an enormous universe. We are like a piece of dust compared to the Earth.

Just helps us realize how small we are.

Although our beloved planet seems really big to us, compared to the observable universe, it's basically like a dust mite next to a skyscraper.

2 Universal Time is measured by the positions of stars, not by clocks.

Universal Time is also known as Greenwich Mean Time, and many believe it's measured by some special clock. However, it is actually measured by the position of the stars in the sky.

The position of stars equals Universal Time.

3 Dark energy comprises 68% of the universe, and dark matter makes up 27%.

Dark matter can be trapped in massive objects, and there may very well be over 10 trillion dark matter particles in each cubic centimeter of Earth's crust.

4 Less than 1% of the universe consists of oxygen.

That's pretty surprising, considering that it's what we breathe in.

Probably why a lot of other planets aren't suitable for human life on top of other reasons.

5 Pens do not work in space due to the lack of gravity.

Because of microgravity, the ink wouldn't flow to the ball.

6 Mars experiences blue sunsets and sunrises.

On Mars, the sunlight interacts with iron-filled dust rather than oxygen, scattering low-frequency red light through the atmosphere during the day. At sunset, this red light is filtered away, causing the atmosphere to have a blue glow.

7 The Andromeda Galaxy contains approximately one trillion stars.

That's just a single galaxy! If only one galaxy contains that many stars, imagine all of the stars in every galaxy combined!

8 The universe is likely significantly larger than currently known.

The observable universe refers to the parts of the universe that scientists have been able to see and study. It could be much, much larger, and it probably is.

9 Everything in the universe is in a state of constant motion.

This is true because of the presence of gravity, even in the smallest degree, everywhere in space.

10 There are more stars in the universe than grains of sand on all the beaches on Earth

Considering how tiny sand grains are, and the vast number of beaches and the amount of sand on them, that's pretty crazy.

The Contenders
11 A single day on Mercury is longer than a Mercury year.

It takes 88 Earth days for Mercury to revolve around the Sun, but 176 Earth days for it to rotate on its axis.

12 The Moon is lemon-shaped

This is interesting because the Moon is usually portrayed as being a round sphere. Although it does look a bit like a lemon when it's in its waning or waxing gibbous phase.

13 A single day on Venus is longer than a Mercury year.

One year on Mercury is a long time, so this is pretty crazy.

14 A single day on Venus is longer than a Venus year.

This is like the one about Mercury. Pretty cool.

15 63 Earths can fit inside Uranus.

This is fascinating to me. Our planet can seem humongous to us, but facts like these prove how immensely tiny it really is.

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