[Grig]

There is actually an old Sci-Fi movie with that premise. An astronaught goes up on some mission, something goes wrong, and he winds up on a mirror-earth on the other side of the sun (and his mirror-self winds up on our earth the same way)

Actually, if I remember correctly, it's possible to have 3 life supporting planets, each in their own orbit around the same sun. If mars were heavier (so it could hold onto a denser atmosphere) then it would be warm enough for liquid surface water.

[RadioAstronomer]

Ping :-)

[teeman8r]

the show was a twilight zone.... the wife has the complete series and it is cool to watch them... rod serling is a master. they end up shooting him back into space to set things right again.

my theory on the planets, they are moving towards the sun, and will eventually crash into it, but before they do, each will pass through the ring of life, the precise distance from the sun to sustain life....