Time loop
Time loop, or temporal loop, is a term that may refer to various phenomena connected with time travel:
 A predestination paradox, a phenomenon in which an event of time travel could become part of events which had already occurred
 A temporal causality loop,  a phenomenon whereby a specific moment in time repeats itself continually inside an independent fragment of time
 Manheim Effect, a temporal distortion that led to a specific moment of time which repeated itself
 Kerr loop, a temporal phenomenon which could be created through the interactions of high-energy discharges with superstring material
 Moebius, a hypothetical twist in the fabric of space, wherein time becomes a loop from which there is no escape

See also
 Time Loop, a holodeck program based on the phenomenon