Scientists have found many stars in the outer halo that ________ the rotation of the galactic disk and have a very ________ fraction of heavy elements.

Name: Scientists have found many stars in the outer halo that ________ the rotation of the galactic disk and have a very ________ fraction of heavy elements.
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Stars in the outer halo typically move in a direction opposite to the galactic disk and have a low fraction of heavy elements, indicating they are older and less metal-rich.

Scientists Have Found Many Stars in the Outer Halo That