HFguy wrote:

Earth is closer to the Sun in Winter and further away from the Sun
in Summer.

This is true only for the northern hemisphere and it's not what causes
the seasons.


The tilt of the axis causes seasons, but your distance theories are out
to lunch.

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The difference between the distances on 4 January and 4 July is about 3
percent, which corresponds to about 5 million km or 3 million mi.

http://www.astro.uu.nl/~strous/AA/en...en/zon.html#11
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mike