Are you sure there is nothing to astrology??

[0rganism]

75. pretty sure, yeah

i haven't seen any solid evidence that it provides predictive value.

the theory of gravity has plenty of evidence to support it, and its effects can be forecast and measured pretty well. as far as the effects of distant planets and stars goes, the whole "square of the distance" in the denominator thing kind of reduces the effects below the level of "noise". Here's the problem for astrology being gravity-based:

Fg = G*m1*m2/R^2 (G =~ 6.672 ×10^−11 m^3/(kg *s^2))

so let's say a person is around 100kg. Jupiter is 588x10^6 km away from earth's center of mass at its closest and 601x10^6 km away at its farthest and weighs around 1.89x10^27kg. Therefore

Fg(Jupiter,Dmin) =~ 0.0000365 N
Fg(Jupiter,Dmax) =~ 0.0000349 N
Fg(Jupiter,Dmin) - Fg(Jupiter,Dmax) = 0.00000156 N

of course, that kind of force change is going to be much smaller when we look at something as far away as a distant star.

compare that to the change in gravitational force of the earth on the same person from a 10m change in elevation:
Fg(Earth,Davg) =~ 981.330 N (as a check, remember, F = MA, and our person weighs in at 100kg and Ag(Earth avg)=~9.8m/s^2)
Fg(Earth,Davg+10) =~ 981.327 N
Fg(Earth,Davg) - Fg(Earth,Davg+10) =~ 0.0031 N which is nearly 2000x greater in magnitude than the change in force from that of the full differential of Jupiter's minimum and maximum distances from earth. (note that i'm taking some liberties with rounding to illustrate the point concisely, actual calculations were done with higher precision.)

in other words, a person will get a much stronger change from climbing a couple flights of stairs than from the full range of Jupiter's change in distance from the Earth. the problem is greatly exacerbated at distances of tens or hundreds of light years.

so i think it's safe to say, if astrological signs are greatly influencing our lives, they aren't doing it through gravity.