Question
Hubble's constant is still not precisely known. Calculate $t_{H}$ for two other values of Hubble's constant currently favored by some astronomers:a. $H=71 \mathrm{km} / \mathrm{sec}$ per Mpc.b. $H=65 \mathrm{km} / \mathrm{sec}$ per Mpc.
Step 1
We'll use the conversion factor 1 Mpc = 3.086 x 10^19 km. a. For H = 71 km/sec/Mpc: H = (71 km/sec) / (3.086 x 10^19 km) H ≈ 2.3 x 10^-18 sec^-1 Now, we can calculate the Hubble time t_H as the inverse of Hubble's constant: t_H = 1 / H t_H ≈ 1 / (2.3 x 10^-18 Show more…
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