I understand that on earth we feel the heat of the Sun because it radiates light to earth which then gets trapped within our atmosphere and gives out heat.  Space, being a vaccum, would contain no heat as there is no matter to conduct the heat of the Sun, so how close could you get to the sun before you would feel any heat from it?  Also would the sun not be able to radiate heat in the form of light to human skin in the same way as it radiates heat to the earth?

Many Thanks

James Stretton (Colchester)