Considering the effects of the relativity theory in terms of the curvation of space, I am wondering if for the calculation of the distance to the stars using the parallax method (below 100ly), the effect that the sun is creating a deformation in the solar system is taken into consideration. The escape velocity of the solar system from the earth orbit is around 42Km/s. I do not know how to calculate how this may affect a light ray travelling from outside the solar system and arriving at the earth orbit, but for sure it has an effect. Furthermore, imagine the following: 1. There is a star 4.2ly away from the sun 2. It is located in a direction perpendicular to the earth diameter If we mesure the angle formed between the star, the eart and the sun at the beginning and the we measure the angle six months later (consider the 90ºeffect), the values we would obtain would be: 89º 59'59.18'' 90º 0'0.52'' That means that the angle difference is 0.0005% 42Km/s / 300000Km/s = 0.014% So actually, the sun effect may affect a lot. So my point is that if the sun is curving the lightpath, maybe we are mesuring a more little angle difference than which is actually, and , therefore saying that the star distance is more than which actually is. Any ideas on how the light path is affected when travelling through the solar system?