Problem 7 The distance between stars is about 4 x 1016 m. The Milky Way galaxy can be approximated as a disk of diameter 1021 m and a thickness of 1019 m. Approximately determine the number of stars in the Milky Way galaxy.
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85 x 10^60 m^3 ** Show more…
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The Milky Way galaxy can be approximated as a disk that has a diameter of 10^21m and has a thickness of 10^19m. If the nearest neutron (a collapsed star composed primarily of neutrons) is 3.00x10^18m from Earth, estimate how many neutron stars are in the Milky Way galaxy.
Hunza G.
The distance from the Sun to the nearest star is about $4 \times 10^{16} \mathrm{m} .$ The Milky Way galaxy (Fig. P1.56) is roughly a disk of diameter $\sim 10^{21} \mathrm{m}$ and thickness $\sim 10^{19} \mathrm{m}$. Find the order of magnitude of the number of stars in the Milky Way. Assume the distance between the Sun and our nearest neighbor is typical.
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