Christmas Star System Planet

This terrestrial planet in the Christmas Star system was the homeworld of a humanoid species, destroyed when their star went supernova.

Geography
Before its destruction, the planet appeared to be quite Earth-like, with hills and waterfalls. After the supernova, the planet became rocky and devoid of life.

Environment
It is unknown what the original environment of the planet was, although it was presumably Earth-like. The supernova made the planet lose a habitable atmosphere, appearing to lack one once it was rediscovered.

Inhabitants
The native sapient species of the Christmas Star System Planet were human-like humanoids, an advanced species who bore turquoise skin and a light pink hair tone.

Flora
The planet appeared to have had several analogues to Earth's flora, although it was also known to have mushrooms far larger than any seen on Earth.

History
Thousands of years ago, the planet's inhabitants formed a peaceful, advanced society. However, the system's star went supernova around 3120 BC, which destroyed all other planets in the system. The planet's inhabitants had seen the supernova coming, and unable to escape it, accepted their fates, storing relics of their culture in a tower meant to survive the blast. When the blast came, all life outside the planet was destroyed, leaving the planet as a desolate, rocky, uninhabitable world, and the light was seen on Earth as the Star of Bethlehem. After a few thousand years, a human expeditionary party found the planet, entering the tower and discovering the remnants of the alien culture.