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The Sun

Description
Structure can be divided into four parts
Solar interior
Visible surface or photosphere
Chromosphere
Corona

Spitzer Space Telescope
Launched in 2003
Collects infrared (heat) energy mostly blocked by Earth’s atmosphere
Orbits Sun

One of 200 billion stars that make up the Milky Way Galaxy
Only star close enough to allow the surface features to be studied
An average star
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