From the photo of components, it seems that each player has his own planet track on his player board.
Should the planet track be in-sync between players?
If so, what is the purpose for having multiple tracks for the same information?
Is there something I got it wrong? Maybe the planets are not sync among players (but it doesn't really make sense to me, theme-wise)?
No the planet track does not need to be in sync with the other players. Depending on which color token you move on the track, you gain a relic of that color.