Russian Orthodox cross is also called just Orthodox cross. At the same time the Orthodox churches use different crosses and any of them is called "Orthodox cross". Moreover, there are no such crosses like just "Orthodox" or "Catholic", each type of cross is a feature of local tradition. The cross has three horizontal crossbeams — the top one represents the plate which in the older Greek tradition is inscribed with a phrase based on John's Gospel "The King of Glory", but in later images it represents , and the bottom one, a footrest. In many depictions, the side to Christ's right is higher.
Horizontal branch occur for 10% or more of post-AGB stars, although it is thought that only particularly late thermal pulses create extreme horizontal-branch stars, after the planetary nebular phase and when the central star is already cooling towards a white dwarf. Globular cluster CMDs generally show horizontal branches that have a prominent gap in the HB. This gap in the CMD incorrectly suggests that the cluster has no stars in this region of its CMD. The gap occurs at the instability strip, so many stars in this region pulsate. These pulsating horizontal-branch stars are known as RR Lyrae variable stars and they