Difference between revisions of "Twilight Zone World"
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A [[Twilight Zone World]] or [[Ribbon World]] is tidally locked to a [[star]] with a temperate band at the Twilight Zone, plus a Hot region (hemisphere) facing the Primary and a Cold region (hemisphere) away from the Primary. | A [[Twilight Zone World]] or [[Ribbon World]] is tidally locked to a [[star]] with a temperate band at the Twilight Zone, plus a Hot region (hemisphere) facing the Primary and a Cold region (hemisphere) away from the Primary. | ||
| − | * [[Main World]] or non-[[MW]] trade classification. | + | * It can be classified on a [[Main World]] or non-[[MW]] trade classification. |
| − | * [[Planet]] or [[world]] type. | + | * It is a [[Planet]] or [[world]] type. |
| − | == Description | + | == Description ([[Specifications]]) == |
Ribbon worlds are tidally locked planets, aligned with a star, with one very hot side and one very cold side. Because of this, the habitable zones of these planets forms a thin ribbon around the equator. | Ribbon worlds are tidally locked planets, aligned with a star, with one very hot side and one very cold side. Because of this, the habitable zones of these planets forms a thin ribbon around the equator. | ||
=== Planetary Characteristics === | === Planetary Characteristics === | ||
| − | + | Twilight Zone Worlds do not generally retain [[natural satellite]]s. | |
{| class="wikitable sortable" | {| class="wikitable sortable" | ||
| Line 127: | Line 128: | ||
No information yet available. | No information yet available. | ||
| − | == History & Background | + | == History & Background ([[Dossier]]) == |
| − | + | An example map of a twilight zone world. | |
| + | * One side of the world permanently faces towards the star. | ||
| + | * One side of the world permanently faces away from the star. | ||
| + | * Between the two is a twilight zone, where the star eternally hangs on the horizon. | ||
| + | |||
| + | [[File:Example Twilight Zone World.png|700 px]] | ||
| + | |||
| + | ==== Ovoid Shape ==== | ||
| + | The star's gravity pulls a tidally locked world into an ovoid shape, with the pointy side permanently facing towards the star and the more rounded side permanently facing away. | ||
| + | * The ovoid shape of rocky tidally locked worlds is not usually discernable with the naked eye. | ||
| + | * [[Gas Giant|Hot gas giants]], orbiting extremely closely to their stars, may have a very exaggerated ovoid shape. | ||
| + | |||
| + | [[File:Egg-Shaped Rocky World.jpg|300 px]] [[File:Egg-Shaped Gas Giant.jpg|300 px]] | ||
| − | == | + | == [[World]]s & [[Sector]]s ([[Astrography]]) == |
| − | This type of world is found throughout [[Charted Space]]. | + | This type of [[world]] is found throughout [[Charted Space]]. |
| − | === World Listing | + | === World Listing === |
The following [[system]]s and [[world]]s are associated with this world type: | The following [[system]]s and [[world]]s are associated with this world type: | ||
{{ClusterWorlds2}} | {{ClusterWorlds2}} | ||
| − | == References | + | == See also == |
| + | {{Referral-Tree-Star-system}} | ||
| + | |||
| + | == References == | ||
{{Intermediate}} | {{Intermediate}} | ||
| − | |||
{{Sources | {{Sources | ||
| − | |S1= {{ | + | |S1= {{Ludography cite|name= Worlds and Adventures|page= TBD}} |
| − | |S2= {{ | + | |S2= {{Ludography cite|name= Scouts|page= TBD}} |
|S3= [[T5: Core rules]] | |S3= [[T5: Core rules]] | ||
| − | |S4= External Link: [http://www.mega-traveller.com/beowulf/ Beowolf's Libary Data Website] | + | |S4= External Link: [http://www.mega-traveller.com/beowulf/ Beowolf's Libary Data Website] {{dead link}} |
|S5= Author & Contributor: [[Morandir Armson]] | |S5= Author & Contributor: [[Morandir Armson]] | ||
| − | |||
}} | }} | ||
{{LE|Astrography|Planetology|Planets}} | {{LE|Astrography|Planetology|Planets}} | ||
| − | |||
Latest revision as of 18:59, 19 April 2025
A Twilight Zone World or Ribbon World is tidally locked to a star with a temperate band at the Twilight Zone, plus a Hot region (hemisphere) facing the Primary and a Cold region (hemisphere) away from the Primary.
- It can be classified on a Main World or non-MW trade classification.
- It is a Planet or world type.
Description (Specifications)[edit]
Ribbon worlds are tidally locked planets, aligned with a star, with one very hot side and one very cold side. Because of this, the habitable zones of these planets forms a thin ribbon around the equator.
Planetary Characteristics[edit]
Twilight Zone Worlds do not generally retain natural satellites.
| Type | Code | Size | Atm | Hyd | Pop | Gov | Law | Remarks |
|---|---|---|---|---|---|---|---|---|
| Locked World | Lk | -- | -- | -- | -- | -- | -- | Locked close satellite. |
| Twilight Zone World | Tz | -- | -- | -- | -- | -- | -- | Twilight Zone Orbit 0-1 |
| Satellite World | Sa | -- | -- | -- | -- | -- | -- | Satellite or moon. |
| Double World | None | -- | -- | -- | -- | -- | -- | Double-planet mainworld. |
| Doughnut World | None | -- | -- | -- | -- | -- | -- | Toroidal world. |
| Ellipsoid World | None | -- | -- | -- | -- | -- | -- | Egg-shaped world. |
| Mobile World | None | -- | -- | -- | -- | -- | -- | Mobile world, whether artificial or natural, with added engines. |
| Ring World | None | -- | -- | -- | -- | -- | -- | Artificial ring world. Megastructure. |
| Rogue World | None | -- | -- | -- | -- | -- | -- | Extrasystemic world. |
| Sphere World | None | -- | -- | -- | -- | -- | -- | Dyson series worlds. Megastructure. |
Probably Planetary Orbit & Climate[edit]
No information yet available.
History & Background (Dossier)[edit]
An example map of a twilight zone world.
- One side of the world permanently faces towards the star.
- One side of the world permanently faces away from the star.
- Between the two is a twilight zone, where the star eternally hangs on the horizon.
Ovoid Shape[edit]
The star's gravity pulls a tidally locked world into an ovoid shape, with the pointy side permanently facing towards the star and the more rounded side permanently facing away.
- The ovoid shape of rocky tidally locked worlds is not usually discernable with the naked eye.
- Hot gas giants, orbiting extremely closely to their stars, may have a very exaggerated ovoid shape.
Worlds & Sectors (Astrography)[edit]
This type of world is found throughout Charted Space.
World Listing[edit]
The following systems and worlds are associated with this world type:
11 of 11 World articles in Twilight Zone World
Adrablsish • Anacreon • Asterr Tyui • Caprice (SR 3035) • Dempukish • Ekhugush • Irashdaa • Liishuga • Loren (RD 2311) • Polyphemus • Suleiman •
| startbacknext(11 listed) |
See also[edit]
Star systems
§ == ( Please refer to the following AAB Library Data for more information: ) == §
References[edit]
This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Mongoose Publishing or by permission of the author. The page history lists all of the contributions.
- Marc Miller. Worlds and Adventures (Game Designers Workshop, 1977), TBD.Marc Miller, Robert Eaglestone, Don McKinney. Worlds and Adventures (Far Future Enterprises, 2019), TBD.
- Marc Miller. Scouts (Game Designers Workshop, 1983), TBD.
- T5: Core rules
- External Link: Beowolf's Libary Data Website dead link
- Author & Contributor: Morandir Armson