ADNAN MUHAMMED

Grade 12,

Galaxy A is reported to be receding from us with a speed of 0.347c. Galaxy B, located in precisely the opposite direction, is also found to be receding from us at this same speed. What recessional speed would an observer on galaxy A find (a) for our galaxy and (b) for galaxy B?

Galaxy A is reported to be receding from us with a speed of 0.347c. Galaxy B, located in precisely the opposite direction, is also found to be receding from us at this same speed. What recessional speed would an observer on galaxy A find (a) for our galaxy and (b) for galaxy B?

Grade:11

1 Answers

Aditi Chauhan
askIITians Faculty 396 Points
8 years ago
(a) The observer away from A appears to be moving at the equal speed as A appears to be moving away from us. Therefore the recessional speed of an observer on galaxy A for our galaxy would be equal to 0.347c.
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