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In the homogeneous metric of Som-Raychaudhuri, in general relativity, westudy the three types of geodesics: timelike, null, and spacelike; inparticular, the little known geodesics of simultaneities. We also study thenon-geodetic circular motion with constant velocity, particularly closedtimelike curves, and time travel of a voyager.    ^Ce la ^Generala Relativeco, en homogena metriko de Som-Raychaudhuri, nistudas geodeziojn de la tri tipoj: tempa, nula, kaj spaca, speciale la malmultekonatajn samtempajn geodeziojn. Ni anka^u studas ne-geodezian cirklan movadonkun konstanta rapido, speciale fermitajn kurbojn de tempa tipo, kaj movadon devoja^ganto al estinto.

Tempa voja^go kaj geodezioj en ^generala relativeco / Time travel and geodesics in general relativity