Exam-style question
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What is the significance of the redshift observed in the light from quasars?.
- A.It indicates they are nearby objects
- B.It suggests they are moving away at high speeds
- C.It shows they are stationary
- D.It implies they are not part of the universe
Model answer
What a good answer should say
- It suggests they are moving away at high speeds
Explanation
Why this works
The evidence of redshift in quasar light indicates that they are receding rapidly from us. This interpretation implies that quasars are among the most distant and fastest-moving objects in the universe, leading to the conclusion that they provide insight into the early universe and its expansion.
Common mistake
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