State police, officials address public about barracks consolidation. Representatives from the Pennsylvania state police, Gov. Tom Wolfâs office and other public officials attended a public hearing on Thursday night at the Philipsburg-Osceola Area Middle School to address plans to consolidate the Philipsburg and Rockview state police barracks. Philipsburg.
A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars.Bars are found in approximately two-thirds of all spiral galaxies. Bars generally affect both the motions of stars and interstellar gas within spiral galaxies and can affect spiral arms as well. barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars.
How do astronomers know the shape of our galaxy (the Milky Way), even though it is not possible to take a photograph of it because to do that we would have to go away from it? The clues we have to the shape of the Milky Way are: 1) When you look toward the Galactic Center with your eye, you see a long, thin strip. This suggests a disk seen edge-on, rather than a ellipsoid or another shape. We can also detect the bulge at the center. Since we see spiral galaxies which are disks with central bulges, this is a bit of a tipoff. 2) When we measure velocities of stars and gas in our galaxy, we see an overall rotational motion that differs from random motions. This is another characteristic of a spiral galaxy. 3) The gas fraction, color, and dust content of our Galaxy are like other spiral galaxies.