The Rosepetal Galaxy

Public astrographic record
Property of the Royal Atheneum of Hövnís, Eörpe

The Rosepetal is a spiral galaxy located in the Ahjroouv'suuh Cluster, which in turn is located within the Ahjroouv Supercluster.
The Ahjroouv Supercluster along with the Pahraju Supercluster - speculated to contain the galaxy the ancient humans originated from - are both categorized as being part of the same, even larger cluster named the Jhosruv Primocluster.

Astrography

The Rosepetal is approximately 127,000 lightyears in diameter and contains roughly 350 billion stars. The galaxy’s luminous disc revolved around a supermassive black hole estimated to be as large as 4 million suns massed together. It bulges around it's central supermassive black hole and forms the bright sphere known as the deep core; a region around 6,500 lightyears across and containing roughly 25 billion tightly compacted stars.
Closer to the center the stars were only a hundredth of a lightyear apart and were known to collide and rip out each other’s stellar cores. This made the area extremely dangerous to travel as the stellar activity was so high and the presence of black holes immense.
Most of the stars outside the deep core region are collected into four spiral arms that rotates around it. The brightest supergiants are concentrated around these arms, as well as glowing clouds of gas and dust which contributed to the apparent gaps between the arms even though these areas were also full of stars.

by Astronomy Picture of the Day

When watching the galaxy on the Z-axis, one could see that most stars were within 800 lightyears above or below the plane of the luminous galaxy disc. It formed a 1600-lightyears wide region known as the thin disc. 3900-lightyears wide on either side was the thick disc which were much poorer in stars than the thin disc and even fewer in planetary systems.
Beyond the thick disc is the stellar halo, which is a huge sphere surrounding the entire galaxy with a few billion stars in highly elliptical orbits. Roughly 150 globular clusters orbited within this region; mainly lifeless and packing hundreds of thousands of extremely old, inhospitable stars into areas only a 100 or so lightyears across. Many of the globular clusters are visible from habitable space and were usually considered very beautiful sights.

Astrochart

The Rosepetal Galaxy

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Astrographic Data

Age

~8.4 billion years

Diameter

~127kly / 39kpc

Thin Disc

~1.6kly / 0.37kpc

Thick Disc

~3.9kly / 0.58kpc

Stellar Halo

~121.5kly / 37.25kpc

Stars

~350 billion

Planetary Systems

~90 billion

Habitable Systems

~2.5 billion

Satellites

The Dragon's Eye Galaxy
The Glitterburst Galaxy
The Skethas Galaxies

Verses

Darkverse
Subverse

Locations of Note

The Axiom
The Blazzus Nebula
The Enigma

The Maelstrom
Tasiv's Tear
Twenty Rings

Demographic Data

Settled Systems

~180

Population

~1.2 Trillion Sapients

Per Species

Ahn Kereu ~1.6%
Akreian ~15.5%
Andelin ~3.1%
Baluke ~0.08%
Bieggjan >0.001%
Dakuth ~1.93%
Eskel >0.001%
Eörpan ~20.6%
Flagg ~6.1%
Furoot ~0.375%
Graylon >0.001%
Jhazael ~4.62%
Kolalu ~0.016%
Ktlac Ktlac ~2.42%

Laocoatl ~2.95%
Lima ~5.1%
Lusoyan ~11.29%
Nullvox ~0.043%
Raukken ~4.83%
Rejinat ~0.039%
Soroch ~2.72%
Tektek ~1.56%
Turai ~0.81%
Ultholl >0.00001%
Vulgoc ~8.15%
Xeylon ~0.066%
Yirroc ~6.1%

Per Galactic State

The Ascendancy ~25.17%
The Hextlan Accord ~6.25%
The Llucav Technocracy ~4.25%
The Lukariat ~2.17%
The Qcwu Ssractxa ~3.33%
The Raukk Dominion ~4.83%
The Rin Sovereignty ~5.08%
The Twin Sun Alliance ~7.25%
The United Worlds ~16.16%
The Wheel ~18.83%
Free Worlds ~6.67%

Stars & Systems

Of the roughly 350 billion stars within the galaxy, around 90 billion of them were orbited by planetary systems. Lusoyan astronomers estimated that the galaxy hold approximately 2.5 billion truly habitable stars, with only about 1.1 billion habitable star systems. Of those, it's estimated that less than 0.2 billion of those systems have actually been settled by sentient beings.
Systems orbiting G- and K-type yellow and orange dwarfs are considered the most likely to be habitable, and make up about 22% of the galaxy's stars. Their lifespans of tens of billions of years give plenty of time for life to develop and evolve.
More common than these are the M-type red dwarfs that make out around 70% of the galaxy's stars. Hovwever, only 1% of these have been found to be habitable and the majority were surveyed by probe droids and then left untouched unless they possessed mineable resources.

Native Life

The Rosepetal is home to a surprisingly large and diverse number of truly native lifeforms, both organic and of so-called extrinsic nature. Organic life is thought to have started emerging upon planets in habitable systems some 5.4 billion years ago. It's unknown for how long the photonids and umbsids native to the intergalactic void could have existed before that.
Of all the currently known lifeforms inhabiting Rosepetal, its very rare to refer to any of them except the Sketh as alien and extragalactic. Even the descendants of the ancient sleeper ship humans, and the immigrants from the dying Glitterburst galaxy, have lived long enough within the Rosepetal to be classified as native.

Galactic Arms

The Rosepetal is classified as a spiral galaxy, with the highest density of stars and other celestial objects concentrated along four major 'arms' that spin outward around the center and each other as they follow the rotation of the galaxy itself.
When viewed top-down, the galaxy spins clockwise, though astronomers, astrocharters and astronavigators commonly refer to this rotational direction as 'spinward'. The counter-clockwise direction is similarly called 'trailing' or 'trailward'.

The Galactic Arms by Nimin N.

Asurla's Wake

Named after the first lusoyan to do interstellar space travel and is still considered of central importance to the Ascendancy. It's famous for being rich in minable resources, something that contributed to the rapid expansion of early lusoyan civilization.

Dragon's Tail

It's speculated to have received its name from one or two sources: either from sightings of the near-mythical naiavon, one of few known lifeforms known to be native to the vacuum of space; or from the fact that it trails out close to the Dragon's Eye companion.
It was primarily populated close to the core by the akreian, eörpan, lima, andelin and sirchen once interstellar travel was developed, and only relatively recently the outlying trail became inhabited by the raukk.

Farthest Reach

Also called 'Asurla's Little Cousin', the Farthest Reach arm was the second galactic arm to be explored and settled by the lusoyans. The origin of it's official name is unclear.
Similarly to Dragon's Tail its core became mainly populated by the eörpan, lima, andelin and sirchen. The ktlac ktlac also moved here after their territory along the Dragon's Tail was overrun by the skethal infestation.

He-Zy's Whisker

It was named from the akreian deity He-Zy Atkur, goddess of motherhood and protection. In old akreian mythos prophets would receive one of the goddess' whiskers as a sign of her favor.
This arm was first primarily populated by the akreian during the heights of the ancient Atramen Empire, and was the third arm to be charted by the lusoyans. Parts of its length is today included in several territories, including The Ascendancy, The Hextlan Accord, The Twin Suns Alliance, The United Worlds, and The Wheel.