What if no stars had any Doppler shift? Then what bout stellar motions relative to our solar system? possible?

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What if no stars had any Doppler shift? Then what bout stellar motions relative to our solar system? possible?

2007-06-19 14:24:23 · 3 answers · asked by dave b 1 in Science & Mathematics ➔ Astronomy & Space

3 answers

Stellar motion in a circle around our solar system is possible with no Doppler shift. Stellar motion towards or away from our solar system will always create a Doppler shift (though perhaps very small).

2007-06-19 14:27:58 · answer #1 · answered by lithiumdeuteride 7 · 0⤊ 0⤋

Remember, Doppler shift does not measure absolute motion. It only measures either approach or receding velocity. Anything travelling parallel to us in space would show no Doppler shift.

2007-06-20 03:36:17 · answer #2 · answered by Adolph K 4 · 0⤊ 0⤋

Then Doppler Radar would be useless....

2007-06-19 14:33:40 · answer #3 · answered by Rampage 2 · 0⤊ 0⤋