In 2365, the USS Enterprise-D launched a probe of this type with a full sensor platform to study a hole in space, created by Nagilum. (TNG: "Where Silence Has Lease" ) Later that year, the Enterprise-D launched a probe to study an energy vortex. This probe was destroyed by the vortex. (TNG: "Time Squared" ) In 2366, the Enterprise launched a probe of this type to study a closing temporal anomaly before heading to Archer IV. (TNG: "Yesterday's Enterprise" )