Exam-style question
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If the Hubble constant were found to be 50 km s⁻¹ Mpc⁻¹ instead of 70 km s⁻¹ Mpc⁻¹, what would be the effect on the estimated age of the Universe?.
- A.The estimated age would increase.
- B.The estimated age would decrease.
- C.The estimated age would remain unchanged.
- D.The estimated age would become negative.
Model answer
What a good answer should say
- The estimated age would increase.
Explanation
Why this works
The age of the Universe is approximated by 1/H₀. A smaller H₀ gives a larger 1/H₀, so the estimated age increases.
Common mistake
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