Taurus – Taurus I and Taurus Five have been mentioned during the series.
- Taurus I was mentioned by Roarke in Divided in Death; there are diamonds from the Blue Mines on Taurus I. In Portrait in Death, Eve fantasized, briefly, about Summerset settling down with a licensed companion in the Alpha Colony on Taurus I, and never again returning to Earth.
- Taurus Five was mentioned in regards to smuggling in Glory in Death as having "truly excellent wines."
- Taurus Five was also mentioned in Immortal in Death when Roarke completed negotiations for a farming commune. He said that with a bit of restructuring, the commune should be able to provide grain to the manufacturing colonies of Mars, where he has a sizable investment.