I'm trying to remember primarily the author (but titles would be nice as well) of a story I used to read over and over but which I seem to have misplaced in a move. It makes sense that it would have been published some time in the interval 1950-1965.
The story starts out in the UK (I think the earthbound events take place exclusively in Scotland), where two people (father and son) are out hunting and end up stumbling upon the setup of a professor who has designed and built a nuclear-powered spaceship, which I believe was described as a flying saucer. They get involved with him and end up exploring the nearby parts of the solar system; particularly Mars, to the conditions of which they are able to acclimatise themselves and where they face problems from huge, overgrown mosquitoes (I think that was one experiment by the professor gone wrong, but can't remember the details). At some point they come across a native Martian, who ends up explaining to them that his people moved into the asteroid belt for some reason I cannot remember, and that their species have brains that never forget anything and hence they have had no need for a word for "memory". I do think they were telepaths as well.
There were (at least) three books published that featured the basic storyline and characters; I'm fairly sure they were published as a series.
Does anyone know which story this is?
