1. The universe is constantly expanding¹².2. Our solar system is 4.6 billion years old¹².3. Scientists believe the Earth will be destroyed by celestial phenomena in the next billion years¹.4. The universe is made up of roughly 68% dark energy, 27% dark matter, and 5% normal matter¹.5. It would take 450 million years for a modern spacecraft to reach the center of our galaxy¹.6. There are more stars in the universe than grains of sand on all the beaches on Earth².7. A black hole is created when big stars explode. Its gravitational force is so strong that nothing can escape from it².8. The universe has no centre and is constantly expanding (getting bigger) every second².9. The Earth is about 4.5 billion years old².10. The Earth is tiny in comparison with the rest of the universe – it could fit into the sun 1.3 million times².These facts truly highlight the vastness and mystery of our universe. Isn't it fascinating?