Part 1 explains the structure of Quartz and why it forms into Hexagonal shapes. Based upon cooling and settling pressures around the area, a hexagon is the easiest structure for molten silicates to form into. We see hexagons, even on huge, planetary scales. Australia itself could be a massive 'caldera' explaining all our heavy materials and almost has a hexagonal shape. Geologists do not talk of this to my knowledge...
This exaplins why the Martian 'space ships' are in fact natural formations (at least these two). This again derives from the structure of quartz. I have, unfortunately, yet to see something truly artificial on Mars.
Impact Craters on the moon really seem very much to be volcanoes. Yes it's funny, during the Apollo missions they supposedly 'proved' the craters were impacts, 'ending a long debate.' I tend to think that 'they' just analysed space debris inside old volcanoes. You have to just look at the big picture, why these craters are not elliptical, as they would always be, if they were from meteorites, comets, asteroids. One commenter in fact stated that many experiments were performed, finding that non-elipical craters could form from bombardment, however, so we must consider this. Another stated that no meteorites have ever been found in some of these impact sites.
Part 4, truly pushes into new territory. It was previously explained that certain structures on the moon are in fact volcanoes, but there is certainly another, yes another explanation! What if they are all in fact not impact craters, but natural 'holes' found in pumice rock. There is a huge 'mystery' about why the moon and phobos are under weight. They both seem to have been made out of mantle material, that is iron but also volcanic rock, pumice! The SURFACE was then filled in with space debris!