"Henry Spencer" wrote in message
...
In article ,
Greg D. Moore \(Strider\) wrote:
Actually if you had a moon tidal locked to a planet that was tidal locked
to
its sun, you could have an interesting situation.

Except that such a situation is impossible. The only way it kind of works
is if the moon somehow ended up in the sun-planet L2 position... which is
unstable.

That was my first thought. Then it occurred to me that the moon might be
like our moon with 2 week days and 2 week nights. In that case, the moon
would not be unusual, but the planet would be. Mercury was thought to be
tidal locked to the sun at one time.