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Sagittarius A*

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Sagittarius A* (pronounced "A-star") was the supergiant quantum singularity at the center of the Milky Way Galaxy. It had an estimated mass of slightly over four million solar masses.

In 2384, the Machine, under the directive of the Body Electric, increased the mass of Abbadon, another massive black hole, intending to collide it with Sagittarius A* to create a subspatial lens. The lens would have been capable of transmitting energy and information across the universe to the Body Electric's home galaxy, as well as becoming part of a work of art to represent its achievements for cosmic posterity. However, subspace throughout the entire galaxy would have been destroyed, and the resulting radiation wave would have killed all biological lifeforms. The crew of the USS Enterprise-E and the Traveler, Wesley Crusher, persuaded the Body Electric not to complete its task and instead create a longer lasting, non-destructive cosmic network. (TNG - Cold Equations novel: The Body Electric)


Stellar classification
By class and type class O blue-violet starclass B blue starclass A blue-white starclass F white star (white dwarf) • class G yellow star (yellow dwarfyellow giant) • class K orange star (orange giant) • class M red star (red dwarfred giant) • green starbrown dwarfN-type starR-type starS-type starD-type star
By size or makeup black hole/black starcarbon starcollapsardwarf star (brown dwarfred dwarfwhite dwarfyellow dwarf) • giant star (blue giantred giantorange giantyellow giant) • Lazarus starneutron starprotostarpulsarsupergiant starWolf-Rayet star

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