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the Sun and the Earth

 

How far is the Earth from the Sun?

 

The Sun is about 150 million kilometres from the Earth. We can't give an exact value (unless we know the date and time) because the path followed by the Earth around the Sun isn't a circle, it's a 'squashed circle', which is called an ellipse. This means that the distance between the Earth and the Sun changes. The Earth is closest to the Sun on January 4th (147 million kilometres) and furthest from the Sun on July 4th (152 million kilometres).

 
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You can check up on the details of how the distance to the Sun was first measured in the Factary.

 

 

Flace captured by TRACE

Image credit: TRACE

 

This Flare captured by TRACE measures more than 120,000 kilometers high, which is higher
than 9 Earths stacked on top of each other.

 
   

* OK   ** Tricky   *** Brain Teaser

 

 

  Q *** Quick Quiz (watch out for this one!)

A ***

 

Did you know? - The Earth would certainly be frazzled if our Sun was a blue-white star and not a yellow dwarf!

 

The Earth is the third planet from the Sun.

   

None of the nine planets in the solar system orbits the Sun in a circle. Their orbits are elliptical - like a slightly squashed circle shape.

 


 

 

 

Image Credit: Dr Russell Cockman, April 2002

   

 

   
   

 

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