OK, I know this post is for lost stories here but this is a smart crowd and I thought perhaps you can help me. I remember as a teenager seeing a "B" Sci-fi movie made somewhere between 1965 and 1970. The plot involved scientists discovering a planet exactly opposite the Earth and on the same orbit. An Astronaut was sent on a 1 year round trip mission to the planet to check it out, however, he returns after only 6 months. The Astronaut claims he is on the mystery planet and the scientists all say he is wrong. This is Earth. Soon the Astronaut starts noticing strange things. His wife driving on the wrong side of the road. A light switch that should have been on his left is now on the right and other weird things. The scene I remember best is the Astronaut is being examined and someone brings in a large poster board with detailed writing on it. The writing does not make sense till they hold up a mirror and the Astronaut can now read it. Everything is backwards! It almost sounds like a "Twilight Zone" but I swear it was a movie. Can't remember the name or anyone who starred in it. Does anyone out there remember this one?