Space Traveller

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.

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.

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

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