Nasa's Unexplained Files

A photograph taken during the Apollo 17 mission appears to show a United States military outpost on the Moon’s surface. The documentary also investigates the ongoing scientific effort to determine whether life exists in the hidden oceans beneath the icy crusts of Jupiter’s moons.

is an episode‑type programme that presents two seemingly unrelated mysteries from space exploration. The show’s format follows a concise, investigative style, aiming to unpack visual clues and scientific queries that have captured public imagination. The first segment focuses on a photograph taken during the Apollo 17 mission, which some observers argue depicts a United States military outpost on the lunar surface. The image is examined for signs that might suggest a man‑made installation rather than a natural formation. In the second part, the programme turns its attention to the icy moons of Jupiter, probing the ongoing scientific investigation into whether life could exist within their hidden oceans. It outlines the basic premise that these subsurface seas might harbour conditions suitable for biology, prompting researchers to consider the moons as potential habitats. By pairing a controversial lunar photograph with the search for extraterrestrial life in Jupiter’s moons, the episode highlights how visual evidence and speculative science often intersect in space discourse. It presents the viewer with a balanced look at both the intrigue surrounding alleged lunar structures and the methodical approach scientists take when assessing habitability beyond Earth, without venturing beyond the material provided.