Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Suggestively termed a microquasar , recent radio and archival optical observations of its motion through the sky have now allowed its orbit to be calculated . Illustrated above, the black hole's present galactic location is indicated by the purple dot, with the Sun's position in yellow. Astronomers note this black hole's orbit about the galactic center, looping high above and below the Galaxy's plane of gas, dust,and stars, is similar to orbits of globular star clusters , ancient denizens of our Galaxy.
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