Research interests: algebra, algebraic groups and geometry, set theory, (g)astronomy.
"Sagittarius A* is a bright and very compact astronomical radio source at the Galactic Center of the Milky Way. It is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic. Sagittarius A* is the location of a supermassive black hole, similar to those at the centers of most, if not all, spiral and elliptical galaxies."
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Last seen Apr 4 at 16:15