Hi,
the Larry Pesavento books are an excellent resource (try emule or buy them!). I've been studying this for the last few weeks after reading Pesavento's books and some of the correlations and conjunctions in relation to tops/bottoms/big thrusts are really interesting. Not all of them relate to forex though.
For starters google 'moon void of course' and have a back test.
http://www.skyviewzone.com/vocmoon.htm is good.
If used with technicals, elliot wave and fibs the results are excellent.
The moon is void of course tomorrow -15/2/06. "void of course means the moon is in between zodiac signs, i.e. it is moving from say Libra to Virgo but is currently in between them. It only stays in this state for a few hours every couple of days or so.
Plus the different phases of the moon can give some nice moves. Remember though, the moon moves the tides and the tides are never the same - still, it's just anonther tool for your trading arsenal. Plus I find it pretty interesting too.
Eclipses are really good indicators expecially for stock markets.
You'll need an ephemeris to go into further detail, you can get free ones off the net. I'm still learning how to use it so I'll put some of the conjunctions I've managed to find later on. There's nothing major happening (related to forex) from what I've managed to work out so far till around the 7th March, other than the moon movements.
Tim