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MATERIAL FROM CLASS 9: Wednesday October 4
The Ring nebula: we point our telescope at the points
A a hot white dwarf star in front of (most of) the gas of the nebula
B a star behind the gas of the nebula
C 'empty' space
D glowing gas in the nebula.
Can you use Kirchhoff's laws to explain why we see spectra like this?
What element is most common in this gas?