A sighting was the observation of an object or creature.

As of 2151, the Vulcan database had recorded no previous sightings of the comet discovered by the crew of Enterprise NX-01. It was subsequently dubbed "Archer's Comet". (ENT: "Breaking the Ice")

In 2266, following the Romulan destruction of Outpost 2, Outpost 3, and Outpost 4, Captain James T. Kirk ordered Lieutenant Nyota Uhura to contact the remaining outposts with instructions to inform the USS Enterprise of any Romulan sightings or sensor readings. (TOS: "Balance of Terror")

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