Figure 1. Distribution [6] of star populations in the Milky Way, showing how Population II stars essentially form a halo around the disk of the Milky Way where the stars in Population I are concentrated

From

An Element in a Paradigm Shift? – Could Population II Stars Actually be Younger than Population I stars?

Arne Bergstrom

International Journal of Physics. 2014, 2(3), 78-82 doi:10.12691/ijp-2-3-2