Editing Physical Realm

{{spoilers|book=au}}

'''Astronomy''' is all the space objects in the [[cosmere]], including [[cosmere#planets|shardworlds]] and minor shardworlds, suns, stars and moons.

The cosmere is a fictional universe, but it can also be considered the dwarf (miniature) galaxy that contains everything mentioned here.{{qa ref|977|172|Does the Physical Realm of the Cosmere have more or less the same structure as our own?|date=2012-09}}

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== The Selish System ==
The Selish System orbits a yellow star named Mashe. It has two gas giants, named Ky and Ralen, and a dwarf planet. 

=== Donne ===
Donne is the closest planet to the sun. While it is in a habitable region, it is barren and suffers from terrible dust storms.{{book ref|au}}

=== Sel ===
:''Main article:'' [[Sel]]

The second planet from the sun, Sel was an Earth-like Shardworld inhabited by humans and artificially created beings called [[Seon]]s and [[Skaze]]. The planet was the location of [[Elantris]]. Sel was dominated by the [[Fjordell Empire]], with [[Arelon]] and [[Teod]] being the only remaining free nations. All these nations (except Teod which is located on a continent to the north) were situated on the continent of Opelon (named Sycla by the Fjordell Empire).

==== Moons ====
Sel has a single moon named Oem.

== The Scadrian System ==
The Scadrian System has a yellow sun. It has five planets: Scadrial within the system's habitable zone; two gas giants, named Aagal Nod and Aagal Uch; and finally two dwarf planets.{{book ref|au}}

=== Scadrial ===
:''Main article:'' [[Scadrial]]

The planet was created by the Shards [[Ruin]] and [[Preservation]]. The orbit of the planet has been changed by people using [[Investiture]]. Its size and gravitation are 1.0 cosmere standard{{book ref|au}}.

== The Taldain System ==
The Taldain System is a binary system. The two stars in it are a weak white dwarf star surrounded by a particulate ring and a blue-white supergiant.{{book ref|au}}

=== Taldain ===
:''Main article:'' [[Taldain]]

Taldain is a tidally locked planet. 

== The Threnodite System ==
The Threnodite System has a single gas giant named Purity. The habitable zone has three planets named Monody, Elegy, and Threnody. Elegy has a single moon named Coronach.{{book ref|au}}

=== Threnody ===
:''Main article:'' [[Threnody]]

Threnody is the minor Shardworld that contains the [[Forests of Hell]]. It is the setting for the story [[Shadows for Silence in the Forests of Hell]]. It has many features that are similar to Earth, including forests, mountains and oceans. Silver seems to be a fairly common resource on the planet, but because of its importance to survival, it is still finite and valuable.

== The Drominad System ==
The Drominad System has four planets in the habitable zone, three of which have developed human societies. There are three gas giants. There is also an asteroid belt between the habitable zone and the gas giants.{{book ref|au}}
=== First of the Sun ===
:''Main article:'' [[First of the Sun]]

First of the Sun is a minor shardworld consisting mainly of an large ocean and island systems{{cite}}

==== Moons ====
First of the Sun has a single moon named First of the First.

== The Rosharan System ==
:''Main article:'' [[Greater Roshar]]

Greater Roshar is a solar system containing thirteen planets. Some have life, sentient and not, others are barren. There are three planets in the habitable region and ten gas giants. The gas giants are named after Vorin numerals.{{book ref|au}}

=== Ashyn ===
:''Main article:'' [[Ashyn]]

Ashyn is a minor shardworld{{17s ref|post|62280|Q&A at Spokane Barnes & Noble|date=2013-08-09}} that has sentient life. It is the first planet from the system's sun.

The book [[The Silence Divine]] is set here.{{17s ref|post|62280}} The magic system involves people who gain magical powers from diseases.{{qa ref|460|11|Yes—one is The Silence Divine, a world like ours where you gain magic by diseases|date=2009-11-07}}

Ashyn is mostly barren, with a few fertile patches.{{17s ref|post|62280}} It currently has no [[shard]].{{qa ref|1088|37|This is a world that does not currently have a shard.|date=Mar 22nd, 2014}}{{qa ref|1116|9|Did Ashyn ever have a shard?|date=Mar 12th, 2015}}

=== Roshar ===
:''Main article:'' [[Roshar]]

Roshar is the second planet from the Rosharan system's sun. It has a gravity of 0.7, a year 500 days long, with each year being 1.1 earth years. The planet consists of one large super continent.
==== Moons ====
Roshar has three moons. The first moon is Salas. It is violet, and is the smallest moon. The middle moon is Nomon, which is a bright, pale blue. And the final moon is Mishim, which is small and green.

=== Braize ===
:''Main article:'' [[Braize]]

Braize is the third planet from the sun. [[Odium]] settled on Braize, although he is still effecting [[Roshar]]. Braize is unlikely to get its own books, but scenes from [[The Stormlight Archive]] will be set on Braize.{{cite}}

Braize is known to the [[Vorin]] people as [[Damnation]].

== Other Planets ==

=== Yolen ===
:''Main article:'' [[Yolen]]

Yolen is home to three sentient races{{qa ref|1052|98|Were the original sixteen shardholders all human?|date=2014-3-21}} and was the origin of all humans in the cosmere.{{qa ref|977|198|Where did humanity originate?|date=2012-09}} The original sixteen shardholders were from Yolen.{{qa ref|1052|106|Were all the original sixteen Shardholders from Yolen?|date=2014-03-21}}

=== Vax ===
:''Main article:'' [[Vax]]

Nothing is known of Vax, its peoples, or any [[Shard]]s that may or may not be located there. All that is certain is that it has a manifestation of [[Investiture]].

=== Nalthis ===
:''Main article:'' [[Nalthis]]

On Nalthis, [[T'Telir]] is the capital city of [[Hallandren]] and its bordering mountain state of [[Idris]]. The jungles are situated in a large valley surrounded by mountains and a sea.

==== Moons ====
A single moon orbits the planet.

== Stars and Constellations ==
=== Starbelt ===
The [[Starbelt]] is an unusually bright patch of stars in the sky of [[Threnody]].{{book ref|sfs}} It is useful for navigation in the [[Forests of Hell]] during the night; the light usually filtered through the trees fairly well.

The Starbelt is the same patch of unusually bright stars that is visible from [[Scadrial]].{{qa ref|727|60|There is a very bright star patch|date=17 October 2008}} It is visible from other worlds in the Cosmere as well.{{reddit ref|books|2ytg2h|cpct5rf|date=12 March 2015|text=Visible from other worlds as well.}}

=== Taln's Scar ===
[[Taln's Scar]] is a great swath of red stars that stand out against the white ones.{{book ref|wok|2}}

=== The Tear ===
The [[Tear]] is a particularly bright star in the Rosharan sky. It's name comes from the single tear shed by [[Reya]] in Rosharan Mythology.{{book ref|wor|31 }}

== Notes ==
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