High Velocity Clouds Found to Dwell in Milky Way's Halo
February 5, 2005
Astronomer Laura Danly of the Space Telescope Science Institute (STScI) has taken a major step in solving a 3 year old mystery by measuring, for the first time, the distance to a high-velocity cloud of cool hydrogen gas. The results show conclusively that the cloud, and presumably others like it, dwell in the "halo" of our Milky Way Galaxy, rather than being between galaxies or in our own stellar neighborhood. (The halo is a spherical region surrounding the spiral disk of our galaxy).
Topics: Galactic astronomy, Spiral galaxies, Local Group, Interstellar cloud, Andromeda Galaxy, Galaxy formation and evolution, Galaxy, Milky Way, Halo Astronomer, Laura Danly, cool hydrogen gas, Space Telescope Science Institute