According to the Operation Luna liner notes, this serial drama program was the last BBC radio
broadcast to outdraw the television audience on the same night. The first of the three
original series (“Journey to the Moon”) centered on a crew of four, rocketing to the moon
in 1965. The first time travel occurs in the 11th episode where they find themselves
displaced on Earth by thousands of years. Eventually, they return to their own time.
Almost
all of the recordings of that first series were destroyed, but most were rerecorded for a
rerun series (renamed “Operation Luna”). Those rerecordings are available on CD along
with the non-time-travel second series (“The Red Planet”) and third series (“The World
in Peril”).