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Galaxy Age influences the average temperature of the stars in the Galaxy, and this in turn affects the planets orbiting around them.

Young Galaxies are filled with high temperature stars, and their newly formed planets hold a wealth of abundant minerals and other riches. However, the high intensity burn of these newly formed white and blue stars washes their planets in powerful ionizing radiation, making most of them nearly uninhabitable.

Average-Aged Galaxies have moved past the furious blaze of their young age into a steady burn, resulting in lower average star temperatures across the map. These gentler giants radiate much less noxious energies, and some of their older, more fully matured planets have started to develop an atmosphere that may one day harbor life.

Among these Orange and Yellow stars, mineral richness is slightly less abundant, but the average biomes have become much more hospitable.

Old Galaxies are rife with Orange and Red stars that have burned long and steady. Planets with life-rich biomes are plentiful, but in the long ages since their conception their crusts have mostly been depleted of minerals. Barring the oddity of a forgotten White Dwarf or a stray mineral-rich asteroid belt, these galaxies feature far more viable breeding grounds than mining strips.