human
What are some interesting facts about outer space?
assistant
1. Our sun, the closest star to Earth, is about 93 million miles away.
2. There are over 100 billion galaxies in the observable universe.
3. The temperature of outer space can range from -455 degrees Fahrenheit to over 3,500 degrees Fahrenheit.
4. The largest known object in the universe is IC 1101, which has a diameter of 
1.5 million light-years.
5. Saturn's moon, Titan, is the only moon in our solar system with a dense atmosphere.
6. The Milky Way galaxy is approximately 100,000 light years in diameter.
7. The universe is estimated to be 
13.8 billion years old.
8. Proxima Centauri, the closest star to our sun, is 
4.2 light-years away.
9. Astronomers have discovered over 4,000 planets outside of our solar system.
10. Light travels at a speed of 186,282 miles per second.