We have discovered a new drawf galaxy around the Milkly Way Galaxy (Homma et al. 2016 ApJ accepted. arXiv1609.04346). It is an extremely faint galaxy -- its total brightness is only Mv~-1mag. Our discovery indicates that there are numerous dwarf galaxies that are yet to be discovered in the Mikly Way halo.
HSC Picture of the Month
The comet Helin-Roman-Alu was serendipitiously observed on Oct. 10, 2015. The multiple cores are due to image coaddition - the comet is not being destroyed like Shoemaker-Levy 9!
We peer deep into the Universe
to unveil the nature of Dark Matter and Dark Energy