Temporal observation

Temporal observation is the act of viewing a non-native historical period. Various methods are employed by anthropologists, historians, and law enforcement personnel.

Historical imagery of the Human, Vulcan, and Orion civilizations was displayed by the Guardian of Forever. 

In 2268, the starship USS Enterprise (NCC-1701) traveled back in time to 1968 for historical research. 

28th century scientists observed the construction of the Great Pyramid at Giza. 

In the 31st century, Daniels owned a hand-held temporal observatory.