Look Who it Was Random video

Amazing Facts about the Universe! Space Exploration of the cosmos!

1,349 views · Published 19 November 2017 · 12:27 · Indexed 9 October 2026

Channel: Zero2Hero · 2017 · Education

Watch on YouTube

The starry night is a beautiful thing. But the science behind the cosmos is amazing. Come join us on a journey of space exploration, and learn some incredible facts about the universe!

Learn about dark flow, the big bang theory, and hear about the  amazing journey of the voyager explorations. Brought to you by Zero2Hero.

Click here to subscribe: https://goo.gl/NXuChu

Find out what's amazing about the massive ancient structures, dating back thousands of years!!! https://youtu.be/b9X_1DZyGUI

It’s strange to think that more people have walked on the moon than have been to the deepest parts of our ocean. But, with the development of recent astronomical instruments and new scientific developments, humans have been able to delve deep into the universe and study its many wonders. Stay tuned to find out exactly HOW massive the universe actually is!
Number 10: You’re OLD!
Well, the universe is, anyway. In fact, the universe is 13.7 billion years old – give or take 130 million years! To put this into perspective, our solar system is only about 4.6 billion years old; life began on earth about 3.8 billion years ago, and humans like us, homo-sapiens, have only been around for 200,000 years - a blink of the eye in the history of the universe. To date the universe, scientists examined the date between when the Big Bang occurred and today, and what they have discovered has astounded us.  

Before the Big Bang is the realm of speculation, and cosmologists debate what, if anything, existed before. On the other hand, scientists have been able to trace the history of the universe back to within the first seconds and minutes after the Big Bang. This is impressive since we’ve only been around for 200,000 years.

Number 9: It’s huge!
The universe is very big! The distance from the Earth to the edge of the observable universe is 46 billion light-years. This leads astronomers and scientists to calculate that the observable universe is about 91 billion-light years in diameter. Distances so large they are incomprehensible!

But what does the universe consist of? Well, it contains billions of galaxies, which, in turn, contain solar systems, stars, planets, nebula, black holes and much more. There could be as many as 10 billion galaxies. 
That puts our own existence into perspective - we live on a small planet that orbits a dwarf star with the seven other planets that make up our solar system. But, when we look beyond the boundaries of the solar system we quickly realize that the Earth, and even the sun, are very small in comparison to some of the super-giants astronomers have identified. Although it’s impossible to imagine these sizes, the sun is about 109 times the diameter of earth, and the largest stars in the universe can be thousands of times the size of our sun - which is just beyond imagining! 

Although the universe is full of these planet, stars and galaxies, they only make up about 5% of the total mass of the universe. So, what makes up the other 95%?

Number 8: Our galaxy: The Milky Way.
The Milky Way is the galaxy our planet and solar system are situated in. Its diameter is between 100,000 and 180,000 light years, and it contains an estimated a 100 - 400 billion stars and at least 100 billion planets. It’s so big that, even if humans created a spaceship that could travel at the speed of light, it would still take at least a thousand years to cross it. 

Every star you can see with the naked eye is part of the Milky Way, but it can be best seen as a band of white light arching across the night sky. Today, because of light pollution, you need to be in a really dark part of the world to be able to see it clearly, but back before the advent of electricity, and large cities, our ancestors would have seen a much more detailed picture of the sky. Many people throughout history have theorized about what exactly the Milky Way is, such as the Greek philosopher Aristotle, the Persian astronomer Abu Rayhan al-Biruni (Al Be-Rooney), and the Andalusian astronomer Avempace, just to name a few. Not only that, but there are countless of myths and legends about the origin of the Milky Way and what it is, but thankfully, recent scientific developments have given us the tools to understand our existence outside of stories.


Number 7: Feeling Hot, Hot, Hot
What planet in our solar system do you think is the hottest? Simple logic would have you believe that the planet closest to the sun, Mercury, would be the hottest, right? But it’s not. Instead, at the position of second planet from the sun, Venus holds the title for the hottest planet in our solar system, with a maintained temperature of 462 degrees Celsius – which is hot enough to melt lead. 

But why is Venus hotter than Mercury? Well Venus has a thick atmosphere that traps the runaway greenhouse effect, whereas Mercury barely has an atmosphere. As a result, there is nothing to trap the sun’s warmth on Mercury.

More from this channel