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Season 1 - Sep. 28, 1987
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Season 7 - Sep. 20, 1993
Star Trek: The Next Generation Season 5 Episode 26
HD
Overview:
Stardate: 45959.1. Data’s head is uncovered in an archaeological dig on Earth, where evidence is also found that aliens may have been on Earth as early as the 19th Century. Using modified technology, an away team follows Data into the late 1890s to investigate.