ancient aliens

In the early morning hours of February 25th, 1942, wartime Los Angeles flew into a panic as an ominous, saucer-like object flew over the city, touching off a massive anti-aircraft barrage. Despite the intense barrage, however, no aircraft wreckage was ever recovered.
Chicago artist Marla Friedman's recent portrait sculpture of the legendary Apollo 13 astronaut Captain James A. Lovell, Jr
Congress likes shows about Aliens. Scientists not so much.
Are all these "archeo-enigmas" proof that our ancestors mingled with the star people, and left us clues in their art, architecture, myths and religious texts?
A popular theory amongst those who believe aliens have already visited our solar system is that there is evidence of alien technology in ancient architecture, such as the pyramids in Egypt, the Nazca lines in Peru, or Stonehenge in England.