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Showing posts from April, 2013
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Sagittarius “A” Complex in Scorpio/Sagittarius, the Center of Our Galaxy How did the ancient astronomers know the exact position of the center of our Milky Way Galaxy? Paul LaViolette, Earth under Fire, tells us that the Ancients knew the exact center of the Milky Way Galaxy even though it is obscured by inter-stellar clouds of dust. The olden astronomers marked its location by the arrow-point (Arabic, Al Nasal) of the constellation Sagittarius shown by the orange-colored star Gamma Sagittarii (γ Sgr). Because our solar system moves; and the stars move –our long-term perspective of the universe changes slightly over time. 18,200 years ago Sagittarius’ arrow shaft pointed precisely toward the galactic center –which is quite astounding.
The first modern estimate of the Galactic Center was made by Harlow Shapley in 1917 by determining the 93 globular (dense ball-like) star clusters scattered uniformly around our galaxy. Knowing the position and distance of each cluster, he was able to mak…