Record-breaking faint satellite galaxy of the Milky Way discovered

Figure 1: The position of Virgo I in the constellation of Virgo (left). The right panel shows a density map of Virgo I's member stars in a 0.1 deg x 0.1 deg area, based on the stars located inside the green zone in the colormagnitude diagram of Virgo I shown in Figure 4. The color range from blue -> white -> yellow -> red indicates increasing density. Credit: Tohoku University/National Astronomical Observation of Japan