"Huh? Actually, the Glactic plane is almost 60 degrees offset from our equatorial plane which is offset by 23.5 degrees from our orbit plane." - RadioAstronomer
But that's just it; the Sun's equatorial plane is in line with the Earth's orbital plane around the Sun, which is in line with Mars' orbit around the Sun, which is in line with Jupiter's orbit around the Sun, etc.
Yet it takes light longer to reach Mars and Jupiter than it does to reach the Earth. If Gravity was as slow as light, then Mars would orbit around a lower plane, where the Sun was much longer than 8.3 minutes ago; even more so for Jupiter.
Planetary orbits would be stacked like a wedding cake, in layers, rather than flat like a pancake...if Gravity was as slow as light.
5 Legislative Days Left Until The AWB Expires
Take a look at these sites:
http://archive.ncsa.uiuc.edu/Cyberia/NumRel/GenRelativity.html
http://archive.ncsa.uiuc.edu/Cyberia/NumRel/GravWaves.html
http://www.astro.ucla.edu/~wright/cosmolog.htm