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1. There are some facts about life that are hard to imagine, like the fact that you were once a tiny egg just 0.1mm across.

There are some facts about life that are hard to imagine, like the fact that you were once a tiny egg just 0.1mm across.

2. And in a single ejaculation between 40 million and 1.2 billion sperm cells raced to fertilise that egg.

19 Facts That Will Change The Way You Think About Life

3. That fertilised egg eventually became you. And then you became one of over 7 billion people currently on this planet.

That fertilised egg eventually became you. And then you became one of over 7 billion people currently on this planet.

4. Even though that number sounds enormous, if every single person was placed in a heap in the Grand Canyon it would barely fill it.

Even though that number sounds enormous, if every single person was placed in a heap in the Grand Canyon it would barely fill it.

5. And that number doesn’t compare to the amount of tiny atoms each adult is made up of: Around 7 octillion!

19 Facts That Will Change The Way You Think About Life

6. To put that into perspective, if you compare an atomto the size of an apple, it’s about the same as comparing an apple to the size of the planet.

To put that into perspective, if you compare an atom to the size of an apple, it’s about the same as comparing an apple to the size of the planet.

7. It’s difficult to get your head around how enormous our planet is. Earth has a diameter of 7,926 miles. And at the equator it has a circumference of roughly 24,902 miles.

It's difficult to get your head around how enormous our planet is. Earth has a diameter of 7,926 miles. And at the equator it has a circumference of roughly 24,902 miles.

8. Although about 71 percent of the Earth’s surface is covered in water, researchers estimate that less than 5% of it has been seen by human eyes. The rest of it remains a mystery.

Although about 71 percent of the Earth’s surface is covered in water, researchers estimate that less than 5% of it has been seen by human eyes. The rest of it remains a mystery.

9. But our planet is really tiny compared to other stuff in the universe. For example, the sun has a circumference of roughly 2,713,406 miles.

19 Facts That Will Change The Way You Think About Life

10. 109 Earths could be lined up across the diameter of the sun.

109 Earths could be lined up across the diameter of the sun.

11. Earth looks even tinier compared to the blue Hypergiant ‘Pistol Star’, which is one of the most luminous stars known.

19 Facts That Will Change The Way You Think About Life

12. And even tinier compared to VY Canis Majoris, thelargest known star in the milky way galaxy.

19 Facts That Will Change The Way You Think About Life

13. The diameter of the observable universe is estimated to be 93 billion light years. But the size of the entire universe is thought to be so gigantic that scientists are unable to put a number on it.

The diameter of the observable universe is estimated to be 93 billion light years. But the size of the entire universe is thought to be so gigantic that scientists are unable to put a number on it.

This is an infrared image of the entire observable universe.

14. There’s no evidence to suggest that the universe has an edge. Even if it does, we’ll probably never reach it.

19 Facts That Will Change The Way You Think About Life

15. But there are still so many unanswered questions about life and humanity on Earth. For example, researchers still don’t know exactly why humans dream.

But there are still so many unanswered questions about life and humanity on Earth. For example, researchers still don't know exactly why humans dream.

Some theories suggest that dreams evolved for psychological reasons. Others propose dreams to be unnecessary biological by-products. And some view dreams as mechanisms essential for emotional wellbeing.

16. No one knows exactly why humans produce tears of laughter, joy, and sorrow. There are many different types of tears, but emotional tearing is thought to beunique to humans.

No one knows exactly why humans produce tears of laughter, joy, and sorrow. There are many different types of tears, but emotional tearing is thought to be unique to humans.

Although other animals shed tears, there has only been anecdotal evidence for emotional tearing in species other than human beings. Scientifically, since animals can’t speak, it’s difficult to tell whether an animal is crying emotionally, or simply producing tears for the purpose of lubrication, or due to irritation.

17. And even though time is such a significant part of life, no one can explain when it began or whether it will end. Some believe time is an illusion constructed by humans, and others believe that time existed long before humans recorded it.

19 Facts That Will Change The Way You Think About Life

18. Our planet has been around for a very long time. Scientists have estimated the age of the earth to be4.55 billion years old.

Our planet has been around for a very long time. Scientists have estimated the age of the earth to be 4.55 billion years old.

19. And the global human life expectancy of 70 years represents only 0.00001556% of that, so let’s make the most of the short time we have!

And the global human life expectancy of 70 years represents only 0.00001556% of that, so let’s make the most of the short time we have!

19 Facts That Will Change The Way You Think About Life

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