THE SUN. The star we see by day. Goals. Summarize the overall properties of the Sun. What are the different parts of the Sun? Where does the light we see come from? The scientific method: solar neutrinos. The Sun, Our Star. The Sun is an average star.
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The star we see by day
Density = 20 x density of Iron
Temperature = 15,000,000 K
Hydrogen atoms fuse together.
Create Helium atoms.
4 x (1.6726 x10-27 kg) = 6.690 x 10-27 kg
l = k/T = k/(5800 K) l = 480 nm (visible light)
Photo by Big Bear Solar Observatory
- Coronal Mass Ejections
Courtesy of SOHO/LASCO/EIT consortium.