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Bruma
Bruma
Bruma
Astrography
Star Aphbrae
Type Nitrogen giant
Satellites 55
Gravity 1.94 G
Orbital distance 9.5 AU
Day length 39.5 hours
Year length 401.5 days
Diameter 82880 kilometers
Axial tilt 2.595 degrees
Temperature
Average -59.3 C
Minimum -108.6 C
Maximum 100.8 C
Atmosphere
Atmosphere composition 72.50% hydrogen, 11.5% nitrogen, 8.9% oxygen, 6.10% helium, 1% other
Surface pressure >5 million atm at core
Demographics
Factions Eteno Imperial Triumvirate
Population 2,350,000,000
Major imports Starships
Major exports Gas, microbes

Bruma is a nitrogen giant under the control of the Eteno Imperial Triumvirate in the Aphbrae system. Bruma is alternatively referred to as a water cloud giant due to the presence of water ice in particulate form and water vapor (depending on their location) in the planet's atmosphere. The native Aphbrec float freely through the atmosphere, the only known sentient creature to thrive in such an environment.

Atmosphere Edit

The upper atmosphere of Bruma is dominated by violent storms, many of them centuries old, whose wind speed can exceed 1,200 miles per hour. Few organisms live in the upper atmosphere, which is far too hostile for larger native organisms to venture into. Even the native Aphbrec, considered the crowning achievement of Bruma's evolutionary history, rarely venture into the upper atmosphere for long periods of time.

The lower atmosphere is much calmer. Winds here are almost negligible, and it is here that the greatest diversity of life is found. This stable zone is considerably large, but not measurably denser than the upper atmosphere.

As with all other known gas giants, past the deepest cloud layers, the atmosphere transitions into metallic hydrogen subjected to up to thousands of gigapascals of pressure and intense heat reaching up to 10,000 K. Coincidentally, some of the heat that radiates into the lower atmosphere allows Bruma's unique ecosystem to exist.

Ecosystem Edit

Bruma's unique ecosystem is the subject of intense study, although much basic information was provided by the Aphbrec themselves. Most organisms live in the lower cloud layer, where winds are weak or non-existent, and heat radiates from the layer of metallic hydrogen below and persistent lightning storms. Like on many other worlds were life has taken root, the majority of living organisms in Bruma's atmosphere are microbes. Larger life-forms are scarce, and those that have evolved are relatively unexciting. Most large organisms are brainless floaters, either independent or colonial, drifting through the lower atmosphere and sucking up whatever sustenance comes their way.

One species stands apart from the rest, the sentient Aphbrec. The Aphbrec are regarded as both the pinnacle of life in Bruma and an evolutionary isolate - they share only basic primordial ancestry with the rest of Bruma's life. Due to their intelligence, they are generally considered to be Bruma's dominant species. They appear to be little more than floating gas bags, but in reality they are complex colonial organisms consisting of thousands of individuals.

Aphbrec have used a peculiar natural ability to naturally send out radio waves to lure many ancient starships to their demise in Bruma's atmosphere, so as to acquire some means of leaving their home. The eventual arrival of the Eteno allowed them to finally achieve this goal.

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