Russian Orthodox cross politics. In the end of the 20th century and the beginning of the 21st century Russian Orthodox Church replaced many traditional Greek Orthodox crosses in Belarus by the Russian Orthodox crosses. The Russian Orthodox cross is depicted on emblems of several Russian ultra-nationalist organizations such as Brotherhood of Russian Truth and Russian National Unity. Russian Orthodox cross Russian Orthodox cross or Orthodox cross, is a variation of the Christian cross known from the 6th century in the Byzantine Empire. The cross has three horizontal crossbeams and the lower one is slanted. Nowadays it is a symbol of the Russian Orthodox
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