UFD Scl-MM-dw5 (IMAGE) Dartmouth College Caption Researchers discovered the first ultra-faint dwarf galaxies to be found around a spiral galaxy with the mass of the Milky Way that’s outside of the clustering of galaxies that includes the Milky Way and Andromeda. Pictured is one of the three galaxies, Scl-MM-dw5, with its stars clustered at center. The galaxies are estimated to be 12 billion years old, with nearly all their stars having formed in the early universe. The galaxies were identified from Magellan Megacam observations, then confirmed with deeper Hubble Space Telescope observations. (Image by NASA, HST-GO-15938, PI: Mutlu-Pakdil) Credit NASA, HST-GO-15938, PI: Mutlu-Pakdil Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.