Terresce

A disconnected rimworld, lost in space to the rest of the universe. Terresce has evolved and devolved at an incredible pace, both losing its technological history and gaining an entirely new magical one.

Colony Ship
Terresce was founded in the very early years of the Space Colonialism age. One of the first few colony ships missed its targeted planet by less than a lightyear and charged on through space unchecked. The crew had all been killed by a lethal virus just months after the ship had left Narcissium, and the ship was left on full power for over a decade, its ion engines gradually accelerating. Part way through the journey, the ship hit a pocket of dead space, and the engines ran too low on hydrogen to power themselves and stopped. The deceleration saved the colonists in cryptosleep; the crash-landing in a sandy desert on the planet now known as Terresce would have annihilated them all had the ship had more momentum.

Colonists
Emergency protocols reanimated the colonists, and thousands of people awoke to find themselves uncrewed on a brand new world. Unbeknownst to them, the colony ship had been one of unethical experimentation. In their years of travel, the automated systems had been following their programming and rewriting the gene sequences of the people aboard.

The Loss
Hundreds died within days, their bodies caving to the unmoderated tampering with their biology. The survivors aged rapidly, and children grew to adults in mere months. Generations passed again and again, and less than a decade later, none of the original colonists were left alive. Great-grandparents to the new generation just 9 years after the colony ship's crash, the original colonists were dead, and their knowledge of their original home all but dead with them. The colony ship was now lost under the desert in which it had landed, its existence to be entirely forgotten.

Magic
Each generation, the genetic tampering done by the colony ship presented in different ways. Most were not noticeable, but every so often someone would live to reach 6, 7, or 8 years of age before becoming elderly and dying. The biosphere of the planet seemed to cause changes too, and it became increasingly common for a Terrescian to learn that they were able to subtly influence the world around them. Some could create sparks, others could strip a leaf from a tree with only their will.

Generation after generation passed, and powers manifested. People began to grow older too. By the time Core Narcissium was entering its Age of Stagnation, Terresce was building a society of magical people living medieval lives, their lifespans having normalised to nearly 70 years.

None of the people on Terresce know of the existence of their original colony ship, or even that human life originated on any other planet. Knowledge of past generations is limited to snippets of memories passed on by word of mouth. Humanity's change in lifespan has been chalked up to an improvement in conditions, and as far as any of the modern Terrescians are concerned, only a dozen or so generations had passed in the last tricentenary, not the thousand which had.