Segue 1

Segue 1, a dwarf galaxy discovered in 2006 through the Sloan Digital Sky Survey, stands out as one of the most remarkable ultra-faint satellites of the Milky Way. This system orbits around 23,000 light-years from our Galaxy and distinguishes itself with its low luminosity and small size. Comprising primarily of old, metal-poor stars, Segue 1 exhibits a unique stellar population. Notably, its high mass-to-light ratio suggests a substantial dark matter content, making it a valuable target for investigating the elusive properties of dark matter. As part of the Milky Way's extended halo structure, Segue 1 contributes to our understanding of galactic assembly. Follow-up observations utilizing telescopes like Keck and the Hubble Space Telescope have provided additional insights, while the galaxy's motion contributes to the observed cosmic microwave background dipole anisotropy.