  The Milky Way is a spiral galaxy comprising three main components: the Bulge,
the Disk, and the Halo. Of particular interest is the Galactic disk, which
holds a significant portion of the baryonic matter angular momentum and harbors
at least two primary stellar populations: the thin and thick disks.
Understanding the formation and evolution of the Galactic disk is crucial for
comprehending the origins and development of our Galaxy. Stellar archaeology
offers a means to probe the disk's evolution by listening to the cosmological
narratives of its oldest and most pristine stars, specifically the metal-poor
stars. In this study, we employed accurate photometric metallicity estimates
and Gaia Early Data Release 3 astrometry to curate a pure sample of the oldest
Galactic stars. This proceeding presents a summary of our primary findings.
