Tuesday, February 1, 2011

YOUR TOP 10 SUN FACTS:

1. The sun is a star. This makes it extremely important for life on Earth. The sun provides us with energy, which brings life on our planet. It defines the seasons, the harvests, and even the sleep patterns of all living creatures on Earth.

2. The sun is the closest star to our planet. Imagine two cars on the road during the night with their headlights on. One car is closer to you and the other one is far away. Which headlights would seem brighter and bigger? That explains why we see the sun so big and bright. It is simply the nearest star to Earth.

3. Remember! The Earth orbits around the sun.

4. The sun is way bigger than the Earth. In fact its radius is 109 times bigger than the radius of the Earth. For those of you who are curious, the sun’s Radius is 696,000km and the Earth’s radius is 6, 376km.

5. DON’T TOUCH THE SUN! IT’S HOT! The sun’s average surface temperature is 5700 C. Compare that to the Earth’s average temperature, which is 20 C.
6. The sun is 150 million km (93 million miles) away from the Earth.

7. How old is the sun? Can you imagine 4.5 billion years?

8. We know that the Earth’s structure consists of different layers. The sun also has layers but unlike the Earth, the sun is entirely gaseous; there is no solid surface.

9. The sun rotates on its axis approximately once every 26 days. The sun is made of gas, which is why its different parts rotate at different speeds. The fastest rotation is around the equator and the slowest rotation is at the sun’s polar regions (more than 30 days).

10. The sun changes. No matter when or where we look at the sun, we will always see something interesting. Scientists observe these changes by watching the sunspots. They increase and decrease on a regular cycle of about 10.8 years.

No comments: