I have a few questions about Mars I hope you can enlighten me about. Firstly,what does the sun look like from Mars,that is the comparative size of the disk with that on Earth? I saw a very poor picture somewhere on the web but couldnt really get a handle on it,perspective/lack of points of reference etc.The picture made it look very tiny indeed , not much bigger than say Venus as viewed from Earth.This suprised me. The pictures so far shown by the latest lander are enhanced so I'm wondering does it show the true brigtness of the surroundings up there?.Are the light levels very poor in reality ,equivalent to say dusk here on earth? My last question is about terraforming Mars into a habitable earth like planet.I keep reading alot about this here and there as if its a forgone certainty.I know little about the processes intended but am I correct in thinking there is a major flaw which will make this dream impossible? Namely that Mars has a very weak and patchy magnetosphere,so that any artificially generated atmosphere will be stripped away by the solar wind action overtime? Therefore any settlement by humans will be restricted to greenhouse-like accomodation at best.Any thoughts on this?