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* [https://en.wikipedia.org/wiki/Two-line_element_set wikipedia: two-line element set (TLE)] | * [https://en.wikipedia.org/wiki/Two-line_element_set wikipedia: two-line element set (TLE)] | ||
* [https://nssdc.gsfc.nasa.gov/nmc/SpacecraftQuery.jsp NASA Space Science Data Coordinated Archive Master Catalog Search] | * [https://nssdc.gsfc.nasa.gov/nmc/SpacecraftQuery.jsp NASA Space Science Data Coordinated Archive Master Catalog Search] | ||
* [https://www.howmanypeopleareinspacerightnow.com/ how many people are in space right now?] | |||
= process: other peoples work to investigate = | = process: other peoples work to investigate = | ||