This web page contains universe facts for kids and is a great resource for anyone of any age researching the universe. We’re going to provide you with the latest and most accurate facts about the universe from scientific sources. Alongside universe facts, you’ll get to see some awesome diagrams of the universe.
The universe facts below will help you understand what the universe is, how old our universe is, how our universe evolved, and other helpful facts about the universe. We hope the below facts about universe are helpful and make researching the universe fun and help open your imagination into space.
If any of the below universe facts are inaccurate or out of date, please contact us and let us know.
15 Universe Facts for Kids
- The universe is everything that is in space, including energy, matter and time.
- The universe has hundreds of billions of galaxies, and each galaxy has millions to trillions of stars. These stars have planets, natural satellites (moons), asteroids, comets, dust and hundreds of millions of other astronomical objects around them.
- The vast empty space in our universe that is between galaxies is known as the void.
- We don’t know the actual size of the universe, and there could be a limit to its size, or it could be infinite.
- We do know diameter of the observable universe is 93 billion light-years.
- The Big Bang theory is the most popular theory of how the today’s observable universe was born and has evolved.
- The Big Bang theory does not explain how energy, space and time were created. This theory explains how the observable universe has evolved and got to its current state, since the actual Big Bang event.
- There are five chronological stages of the universe. They are the very early universe, the early universe, dark ages/large-scale structure emergence, the universe today and the far future of the universe.
- The composition of our universe is 68% dark energy, 27% dark matter and normal matter is 5%.
- According to the Big Bang theory, the age of the universe is 13.8 billion years old.
- In 1929, Edwin Hubble made a major discovery that ultimately proved that the universe is still expanding.
- The most popular theory about the fate of the universe is the Big Freeze theory.
- A few other theories about the fate of the universe are the Big Rip, the Big Crunch, the Big Bounce and the Big Slurp.
- There are some theories that our universe isn’t the only one. The multiverse hypothesis proposes our universe is just one of many disconnected universes. These disconnected universes are sometimes called parallel universe or alternate universes.
- With the enormous size of the universe and the theory that there could be more than one universe, its possible through statistical math that somewhere there is an exact copy of you right now reading this exact same sentence.
A photo showing a small section of our universe.
A diagram showing the evolution of our universe.
Credit: NASA / GSFC / Dana Berry
A diagram showing the universe’s background radiatio.
Credit: ESA and the Planck Collaboration
Additional Resources to Research the Universe
- The Evolution of the Universe – An excellent article that that explains the evolution of the universe.
- Universe on NASA Space Place – Find more facts about the universe on the NASA Space Place website.
- How Big is Our Universe? – Learn from NASA how big the universe is.
- Universe – Wikipedia – Discover more amazing things about the universe on the Wikipedia website.