Explain how we use a spectrometer to help us determine what stars and planets are made of?

Compare the descriptions of spectrometer readings to the examples given on the lesson page.
Based on the description please fill in what atom we are examining with the spectrometer

This spectrometer reading shows only Yellow. Our atom is most likely ______________________.

This spectrometer reading shows some Red, Blue

Question

Explain how we use a spectrometer to help us determine what stars and planets are made of?

Compare the descriptions of spectrometer readings to the examples given on the lesson page. 
Based on the description please fill in what atom we are examining with the spectrometer 

This spectrometer reading shows only Yellow. Our atom is most likely ______________________.

This spectrometer reading shows some Red, Blue

anonymous · Answer

I might have this backwards, but I believe if the color is red, then it means the object is coming closer to you, and if it's blue its going away from you.