BS01 states that Toa Stars/Spirit Stars are electrical impulses generated by the Great Spirit Robot's systems. The other stars visible in Metru Nui also are electrical signals, representing the thoughts of the being controlling the Great Spirit Robot.
For the rest of the universe you have stated in the past that the domes are lighted by lightstone clusters which dim during the night and thus appear as distant stars.
Based on this I have the following questions:
1a) Do Toa Stars only exist in the Metru Nui dome?
1b) If not, does that mean the skies in the other domes also hold prophetic value to some extent?
2a) If a Toa is currently not in Metru Nui, would their Toa Star be visible in Metru Nui?
2b) If it is visible, would someone with enough knowledge in theory be able to determine any Toa's rough location within the Matoran Universe from it?
Thank you for your time!