Galaxy stars Arentsen.jpeg

An image of the Milky Way overlaid with several yellow dots on the left, and on the right a depiction of a spiral galaxy overlaid with yellow arrows in an anti-clockwise direction.
Caption: Artist impression of the ancient stars in the inner region of the Milky Way. Some examples of the orbits of the stars have been highlighted on the left. The right-hand side shows the location of these stars in the Galaxy with respect to the Sun, spinning around slowly.
Left background image: ESA/Gaia, artist's impression: Amanda J. Smith and Anke Arentsen, Institute of Astronomy, Cambridge