The most massive galaxies in the Local Group — the Milky Way and Andromeda (M31) — contain the highest fractions of metals, which explains the rings on your fingers, your cellphone, and the spoon you ...
Edwin Hubble initially identified approximately 11-12 galaxies within the Local Group, a term he coined, while current estimations place the number of members at 125 or more. The Local Group's total ...
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