The Mission Log 7-B Tapes: The official story is that contact was lost due to equipment malfunction. The recovered camera logs from Tranquility Base suggest a different, more terrifying, reason for the silence.

"Tranquility Base Anomaly" is an experimental short film crafted from public domain NASA footage, an original score, and bespoke sound design.
It presents the final recorded minutes of a lunar mission that encounters an unknown entity on the moon's surface.
Presented without directorial intrusion, the film is a raw, first-person account of a discovery that was never meant to be shared.
Written, Directed, Edited, Scored and Sound Design by: Joseph Balson.
Some Sound Design & Foley Sourced From The Creative Commons 0 Library at Freesound.org.
Original Footage Courtesy of the NASA Archives.
Original soundtrack on Bandcamp: https://josephbalson.bandcamp.com/track/tranquility-base-anomaly-original-soundtrack