How far the Milky Way's disk extends has long been difficult to define—it doesn't end sharply, but fades away gradually at its outer edges. Now, for the first time, an international team of ...

In general, in disk-shaped galaxies like the Milky Way, stars form from the inside out. Therefore, the further you go from the outer edge of the observed galaxy, the younger the stars will be, but the ...

Making stars is a messy business. Although the process takes far longer than any human life span, we’ve sufficiently studied its various stages in stellar nurseries scattered around our galaxy to gain ...

Inside-out growth and stellar migration in the Milky Way: Inside the star-forming disc (within ~12 kpc), abundant cold gas fuels continuous star formation, producing young stars. Beyond this break ...