Planet Name: Malegara

Radius: 6378 km

Percentage Water Cover: 90%

Life sustaining mass: 95% (the northern ice is the only truly uninhabitable part)

Night/Day cycle: 48 earth hours per cycle, with the time ratios of day and night being skewed at the poles.

Year: 186 malegaran days

Gravity: 10m/s/s

Number of Moons: 3 (Closest and tide-producing: Kogrk, second moon: Lagrr, Third and furthest moon: Mag’k’gr)

Atmosphere: 50% Oxygen, 20% Carbon Dioxide, 10% sulfur, 10% Nitrogen, 5%

Temperature: Freezing at northernmost pole, tropical in the southernmost pole with warm temperatures decreasing then suddenly freezing beyond the polar latitude due to gravitational and shade effects caused by the moons.

Sun Type: Class A (known as Vlegrran)

Key Features: Massive tectonic activity causes its abundant oceans to be creased with deep chasms and with enormous mountains. The mountains are so high as to crest the surface and cause islands to form. All of the surface landmass of Malegara is in these islands, many larger than many volcanic islands on earth. These islands are populated by a few land-specialized species as well as various amphibious and semiamphibious ones, such as the Valkarthin.
The waters, up until the northern ice, are inhabitable, and inhabited, by a variety of colorful creatures. Even the bottoms of the trenches, belching lava and various hot nutrients into the waters to settle or rise at the current’s whimsy, are inhabited by bacterium and more than one multicellular species of the deeps.
Bioluminescent patterns are a common trait to most Malegaran species, even those in the deepest trenches, and all have some form of pattern recognition. The species living high enough to catch the light that filters down also boast incredible color displays. Those in the deep trench often have lava to light their way, and so will have more monochromatic patterning. Those living in the lightless zones have no patterns at all other than their bioluminescence.
The nutrients produced from the volcanic vents in the trenches often waft their way up, even as dead photosynthetic algae filters down, forming many layers of nutrient-rich water… just not the right nutrients at times. Many species specialize in their choice of prey, plant, or nutrient group, and thus there are many diverse types of creature in Malegara.

Note: There would probably be more than one biosphere from Malegara on the ship to accommodate the pressure differences in environment.

Sentient Species: Valkarthin, K’khk’Nak*~~**

Why the planet was doomed: an unknown species of spacefaring alien had a dangerous technology they were testing. They didn’t want to test it on their homeworld or any of their colonies. Neither did they want to test it in any of their systems.
So, they flew to the Vlegrran system and began their tests in space and on the Malegaran moons, because of their flat surface and peaceful tectonics. They practiced and perfected their technology. Soon, they were done. The problem was, carrying it all the way back to the homeworld was not practical. They had added a lot to the original technology and the energy requirements to take it back to the system were too great. They could not dismantle it, as that would disturb the delicate balances it required.
The only option was to leave it here, but the technology was top secret. They didn’t want other aliens to find it and learn how to make one of their own.
So they had an idea.
They rigged it up to their ships and transported it to the center of the system. Then they launched it into the sun and went home with the blueprints and notes.

The technology caused the sun to become temporarily unstable, and Vlegrran expelled a massive energy storm that ravaged its planets.
Malegara was no exception. Fortunately (in a sense), the Keepers picked up the energy readings, investigated, and harvested their living samples from Malegara quickly before the energy storm fried it to a crisp.
When they began to harvest the materials, they learned that, deep in the trenches, life still held on… albeit quickly fading life. So they harvested those lifeforms too.

The technology that the aliens had tossed into the sun was built to sustain life on many of their colonies, through a combination of synthesizing, weather control, and mood control. A technology meant to sustain life ended up wiping out a source of incredibly vibrant life. Do you see the irony?