[bikerman]

I seem to remember a twilight zone movie where astronaut’s landed on a planet that looked like earth on the other side of the sun but was never seen because of the same orbit as earth.

[MrB]

Planet X? Of course, something like Voyager would have seen it.

[Red Badger]

It was called “Journey to the Far Side of the Sun” aka “Doppelganger”

http://www.imdb.com/title/tt0064519/