Characteristics and history
Yttrium has an atomic mass of 88.905. This element was discovered by Humans for the first time on Earth's European continent in Finland, in the year 1794. (ST reference: Star Fleet Medical Reference Manual)
The details of how the yttrium reference came to be used in "All Fall Down" can be found here: .
- ST - Divided We Fall comic: "All Fall Down"
- ST reference: Star Fleet Medical Reference Manual
- DS9 reference: Star Trek: Deep Space Nine Technical Manual
- TOS - Rihannsu novel: My Enemy, My Ally