What do we know about the Zygote Crystal on Earth in the 23rd Century?. Well, first off its a crystal – there’s a clue in the name. Beyond that though, our knowledge is a bit fuzzy, to say the least.
We believe that the Zygote Crystal appeared on Earth in Jurassic times and helped the Mud Lizards, a civilisation that has since warred with Earth, escape the consequences of the Chixulub Impactor. This meteor, of course, led to the devastation of Earth at the time and the demise of the dinosaurs.
Had it not been for the intervention of the Zygote Crystal, it would also probably have been the end of the Mud Lizards. Earth folklore tells us that the Zygote Crystal has the capability to massively accelerate the evolution of a species. It somehow came into the possession of the Mud Lizards on Earth in the Jurassic period and facilitated them to develop into the dominant species of the time.
They were able to make technological advances very rapidly and built a spaceship to escape Earth before the meteor hit. They, therefore, became the first beings from Earth in space, gazillions of years before Albert the Rhesus monkey made it in 1948. Having escaped Earth, they settled on the planet Plasmolidium and the rest, as they say, is (more) history.