In Star Trek: Generations, the energy ribbon that draws ships into it is called the Nexus.
The Nexus is a mysterious ribbon-like energy phenomenon encountered by the USS Enterprise-B during the film's opening sequence. Although it appears in space as a glowing band, it is more than a normal cosmic storm: entering it transports people into a state where time and reality behave differently.
The Enterprise-B responds to a distress call from refugee ships threatened by the Nexus. Captain James T. Kirk helps rescue survivors, but the ship is damaged while passing through the phenomenon, and Kirk is presumed dead. Decades later, Captain Jean-Luc Picard discovers that the Nexus is central to the film's conflict with Tolian Soran.
The Nexus is sometimes confused with a wormhole or transporter effect, but the film presents it as a unique energy ribbon with powerful temporal and psychological effects. It also explains how Kirk and Picard can meet despite living in different eras.