The Milky Way

Professor - The Milky Way is the galaxy that contains the Earth. This name derives from its appearance as a dim milky glowing band stretching across the night sky, in which the naked eye cannot distinguish individual stars. The term Milky Way is a translation of classical Latin ____ from the Hellinistic Greek, Milky Circle. The Milky Way appears like a band disk-shaped structure being viewed from inside. The fact that this faint band of light is made up of stars in 1610 when Galileo Galilei used his telescope to resolve it into individual stars. Do any of you know the name of the astronomer who proved that the Milky Way is just one of many galaxies?

Student - Um, Hubble something... Hubble Edward?

Professor - Almost, Mary. Astronomer Edwin
When observing the night sky, the term "Milky Way" is limited to the hazy band of white light some 30 degrees wide arching across the sky. from unresolved stars and other materials that lie within the galactic plane. Dark regions within the band such as the __ and the __ correspond to areas where light from distant areas is blocked by interstellar dust. The Milky Way has a relatively low surface brightness. It's visibility can be reduced by background light such as light pollution or stray light from the Moon. It is visible when __ or better, while showing a great deal of detail at +6.1. This makes the Milky Way difficult to see from any brightly lit urban or suburban location, though very prominent when ruled from a rural area when the Moon is below the horizon. The Milk Way passes through parts of roughly 30 constellations. The center of the galaxy lies in the direction of the constellation, Sagitarrius. It is here that the Milky Way is the brightest. From __ the hazy band of white light appears to pass westward to the __ in __. The band then continues westward the rest of the way around the sky black to __.