Guide:List of external tools

Below is a list of external tools.

Disclaimer: Omniverse GC is unaffiliated with any of the sites linked below.

Planet building tools

 * Visual planet creator - http://planetquest.jpl.nasa.gov/system/interactable/1/index.html
 * Stellar class table - http://www.world-builders.org/lessons/less/les1/StarTables.html
 * Habitable zone, ideal distance, insolation, period calculator - http://web.archive.org/web/20110712052917/http://www.bumply.com/astro.html
 * World generator programme that makes nice maps - http://donjon.bin.sh/scifi/world/
 * Star lifetime calculator - http://hyperphysics.phy-astr.gsu.edu/hbase/astro/startime.html
 * Alternative planetary classification system - http://arcbuilder.home.bresnan.net/PCLMaster.html
 * Some orbital mechanics calculators - http://orbitsimulator.com/formulas/
 * Luminosity calculator - http://web.archive.org/web/20030218125318/www.geocities.com/Area51/Corridor/8611/mseqstar.htm

Biology

 * Evolution basics - http://animals.about.com/od/evolution/ss/evolution.htm
 * Plants under alien suns - http://www.solstation.com/life/a-plants.htm

Miscellaneous

 * SI units and prefixes - http://en.wikipedia.org/wiki/International_System_of_Units#Units_and_prefixes