Wednesday, September 10, 2008

Milky Way :View from Earth

The Milky Way galaxy, as view from the Earth, itself positioned on one of the spiral arms of the galaxy, appear as a hazy band of white glow in the night sky arch across the entire celestial sphere originate from stars and other fabric which lie within the galactic plane. The plane of the Milky Way is tending by about 60° to the ecliptic, with the North Galactic Pole located at right ascension 12h 49m, declination +27.4° near beta Comae Berenices. The South Galactic Pole is close to alpha Sculptoris.

The center of the galaxy is in the way of Sagittarius, and the Milky Way then "passes" through Scorpius, Ara, Norma, Triangulum Australe, Circinus, Centaurus, Musca, Crux, Carina, Vela, Puppis, Canis Major, Monoceros, Orion & Gemini, Taurus, Auriga, Perseus, Andromeda, Cassiopeia, Cepheus & Lacerta, Cygnus, Vulpecula, Sagitta, Aquila, Ophiuchus, Scutum, and reverse to Sagittarius.

The Milky Way looks brightest in the way of the constellation of Sagittarius, toward the galactic center. Relative to the space equator, it passes as far north as the group of Cassiopeia and as far south as the constellation of Crux, representing the high inclination of Earth's equatorial plane and the plane of the ecliptic relation to the galactic plane. The fact that the Milky Way divides the night sky into two generally equal hemispheres indicates that our Solar System lies close to the immense plane. The Milky Way has a moderately low surface brightness, making it hard to see from any urban or suburban location suffering from light pollution.

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