| Answer | Crossword Clue |
|---|---|
| STARCIRCULATORY | Two more systems |
| METRICSPRINKLER | Two systems |
| BIMODAL | Having two systems |
| BINARY | Like two-digit number systems |
| GALILEO | He was branded a heretic for writing the "Dialogue Concerning the Two Chief World Systems" |
| SOLARBUDDYHONOR | Three more systems |
| SEGAS | TV game systems no more |
