10 Science Facts

science facts

1. When you look at the Andromeda galaxy (which is 2.3 million light years away), the light you are seeing took 2.3 million years to reach you. Thus you are seeing the galaxy as it was 2.3 million years ago.

2. Even on the clearest night, the human eye can only see about 3,000 stars. There are an estimated 100,000,000,000 in our galaxy alone.

3. If a piece of the sun the size of a pinhead were to be placed on Earth, you could not safely stand within 150 kilometers of it.

4. The fastest speed a falling raindrop can hit you is approximately 50 km/h.

5. Every hour the Universe expands by a billion kilometers in all directions (ALL directions!).

6. Wounds infested with maggots heal quickly and without spread of gangrene or other infection. 


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7. Astronomers believe that space is not a complete vacuum - there are three atoms per cubic meter.

8. Giraffes often sleep for only 20 minutes in any 24 hours. They may sleep up to 2 hours (in spurts – not all at once), but this is rare. They never lie down. 

9. Half-a-billionth of the energy released by the Sun reaches the Earth. 

10. A teaspoon-full of the matter of a Neutron star would weigh about 112 million tonnes.