Question

1. Suppose that the fluctuations in the CMB were at the nano-Kelvin level. This would imply...

1. Suppose that the fluctuations in the CMB were at the nano-Kelvin level. This would imply the existence of a ________ amount of Dark Matter than the current level.

a. smaller

b. larger

2. The BAO length scale is 150 Mpc. How many light years is this? Please give your answer to 1 significant figure.

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Answer #1

1)larger

2) 1 Mpc = 3.3 × 106 light years

Then,

150 Mpc = 150 × (3.3 × 106)

= 4.95 × 108 light years

= 5 × 108 light years.

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