- The average smell weighs 760 nanograms !
- A hummingbird weighs less than a penny !
The age of the Universe is between 12 and 14 Billion years !
- The age of our Solar System is about
4.5 Billion years !
- Humans have existed as a genus for a few million years !
- The speed of light is 186,282 miles per second!
- Our sun is about 4.6 billion years old and has enough energy to last another 5 billion years. It's classified as a yellow dwarf. When it dies it will not go supernova - it's too small.