Universe Facts for Kids

20 Universe Facts For Kids

1. The Universe is everything found in space (galaxies, stars, planets, etc.), including time itself.
2. The Universe is full of massive astronomical objects, like galaxies, planetary systems, star clusters, and nebulas.
3. The Universe is full of small to large astronomical bodies, like stars, planets, satellites (moons), asteroids, and comets.
4. French astronomer Charlies Messier discovered the first galaxies in 1774 but did not realize they were galaxies.
5. The composition of the Universe consists of normal matter (5%), dark matter (25%), and dark energy (75%).
6. We can only see what is known as the observable Universe, which is the light emitted for all objects that are close enough to have reached Earth.
7. In theory, there are galaxies in the Universe we will never see due to their distance from Earth and the expansion of the Universe according to Hubble’s law.
8. The most distant objected discovered in the observable Universe is HD1, a high-redshift galaxy at 13.463 billion light-years from Earth.
9. Astronomers do not know if there is even an end to the Universe, some think it could be of infinite size.
10. The Big Bang theory is the leading scientific theory of the origin and evolution of our Universe.
11. The age of the observable Universe is estimated to be 13.787 billion years old according to the Big Bang theory.
12. The size of the observable Universe is estimated to be 93 billion light-years (diameter), which is based on the distance from Earth to the edge of the observable universe.
13. Due to the accelerated expansion of the Universe and Hubble’s law we will never know the true size of the Universe.
14. The observable Universe is estimated to have between 100 and 200 billion galaxies.
15. The observable Universe is estimated to have around 200 billion trillion stars, that’s 21 zeros!
16. A small galaxy (dwarf galaxy) in the Universe can have a few million stars, while a large galaxy could have over a trillion.
17. There are several theories that try to explain on the Universe will end far into the future.
18. The Big Crunch theory is based around the Big Bang theory, and it believes the Universe will stop expanding and start to contract, until it becomes a singularity and creates another Big Bang event.
19. The Big Freeze theory is also based around the Big Bang theory, and it believes the Universe will expand forever until all energy is depleted. This process would take an unimaginable amount of time.
20. There are some people who being our Universe is part of a large multiverse, which is a large group of universes existing at the same time.

Universe Pictures

Pictures are one of the best ways for people to learning about something. That is why we are providing you with the below images to help you with your research on the Universe. Below you will find three pictures that represent the Universe. These pictures should help you better understand the Universe and what they look like.

A picture of picture of the Universe.

A picture of the Milky Way galaxy in our Universe from earth.

A diagram of the evolution of our Universe.