Space Traveller
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Sorry all, I've been very sick the last few months or so in hospital undergoing open heart surgery and forgot where I posted this question.
Yes, they are both moving away from earth but in which direction - is Star A moving to the left and Sta B to the right.
If that is correct, how do we know.
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Hi All,
this is something that puzzles me about stars and their movement in relationship to Earth, consider this.
Star A ------ Earth ----- Star B
The light spectrum from both stars is shifted towards the red end of the spectrum so my question is, in which direction are these stars moving?
Dave R
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Hi All,
I'm new to the forum and have always been fascinated with the heavens going back to school days.
My question is this, when we analyze the light coming from Star A & Star B in the attached sketch, we find that they are both Red-Shifted. The question is, in the simplest form, which direction are these stars moving in relationship to earth?
I want to make it quite clear this is not a trick question.
Best Rgds,
Dave R
Movement of stars
in Physics, Space Science and Theories
Posted
Sure they are moving away from us but in which direction.
Based on the basic diagram is Star A moving to the right and Star B moving to the left.
Consider this, Star B is moving to the right at a speed of 6 units. The earth is moving to the right at a speed of 4 units and Star A is also moving to the right at a speed of 2 units, thus the stars show a Red-Shift.
However when we observe the stars, we are studying them from what I would describe as 'Thumb-Tack Earth', and there is nothing we can do about it.