Oh, it's Monday... History of the Galaxy (part 4)

I should post some more if I can make the time for it...
So much to do, so little time.
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Abridged History of the Galaxy (part 4)

The Zorn came here from Andromeda galaxy, where they had absorbed or wiped out many races.  They had their own method of crossing great distances quickly.  They had not perfected quantum movement, but rather they were masters of controlling black holes.  They had learned how to create them nearly anywhere, and learned how to generate worm hole corridors, through which they could travel where they wished in essentially no time at all.

Attacks on the Zorn by Abras ships did not stop them, but proved to be such a problem for the Zorn, that they concentrated all their efforts on stopping Abras.  They joined the Conclave with that purpose in mind.

The Zorn used their ability to manipulate black holes as a weapon against the planet Abras and its inhabitants.  The Zorn first created and then disrupted a large black hole about 300 trillion miles from the planet.  The resultant gamma-ray burst was enough to destroy life on Abras and shut down the planetary computers and robot workers.

Abras had only four hours warning.  That was not enough to set in play a planetary rescue mission, but they did manage to send out a small military mission to jump to Andromeda galaxy with instructions to set off their most powerful weapon near the Zorn home world.

They knew they were going to die, but they believed in "an eye for an eye and a tooth for a tooth".  The Zorn were killing them, so they would kill the Zorn.  The weapon they sent out against the Zorn was an anti-matter time-reversal bomb.  The bomb contained an anti-matter singularity, which could be sent backwards in time and detonate in the past.

The bomb was set on a giant gas planet not too far from the Zorn's planet of origin. The singularity sucked in matter from the gas giant and when that matter met the anti-matter of the singularity there was total conversion to energy.  Eventually, this energy built up to the point where it disrupted the event horizon and the singularity exploded like a miniature big-bang.

Along with everything else within range, the Zorn home world was converted to nothing larger than atomic particles.  The time reversal effect had carried the bomb back to a time before the Zorn first ventured into space, killing them before they could cause trouble for anyone. This caused a disruption of the Space-Time continuum in that part of Andromeda galaxy.

The Zorn ceased to exist.  In one of the paradoxes that crop up when dealing with time, the time reversal only occurred locally in Andromeda, so the planet Abras was still bathed in killing rays, and the Zorn war machines still plagued the Milky Way.  The Conclave attacked and slaughtered the Nisse, Lepp-Ricans and Tomte.  The balance of power in the Milky Way turned and remaining humans became subjects of the Conclave.

The federation of worlds ceased to operate.

The Conclave controlled the Milky Way.

Only a few thousand people who escaped Abras survived.  One group of these took refuge on a planet very much like Abras in the Orion Spur, a small part of the galaxy with no known space-faring races.  It did have a rather small indigenous population of humanoids, but only about 2000 mating pairs.  If the refugees from Abras could hide among that population, they might avoid detection by the Conclave.
That planet is known today to its inhabitants by many names; a few of those include: Dharti, la Tierra, Terre, Terra,  地球, земля (Zemlia), Prithvi, Erde and Earth.