A protogalaxy in the Milky Way may be our galaxy’s original nucleus
A population of stars at the galactic center is the oldest known in the galaxy, a study finds

A population of millions of stars near the center of the Milky Way (shown) is the original seed from which the galaxy grew, researchers say. The eight-star "teapot" in the constellation Sagittarius can be seen on the left.
Terence Dickinson/ESA