TEMPORAL ANOMALIES
Rift or hole in the space-time continuum, which allows for passage from one time period to another, or from one parallel reality to another. Also a Quantum fissure, which is a fixed point in the space-time continuum, essentially a keyhole into other quantum realities. Returning from shore leave by shuttlecraft in 2370, Worf encounted such a quantum fissure, when the shuttle intersected the fissure, its warp engines caused a break in the barriers between realities and allowed Worf to pass from one quantum reality to the next. When the fissure was discovered and was in the process of being analysed, a power surge on board the Enterprise-D caused the fissure to destabilise and allowed other realities to intrude into Worf's current location, some 285,000 Enterprise-Ds, each representing a different quantum reality, were observed coming through the fissure.
