From planets to specks of dust in meteor showers, there are many kinds of solar-system bodies, and how do we classify them? By size? Or by composition? – rock lumps like asteroids, vaporizable snowballs like comets. Or by orbit? – satellites go around primaries, Trojans hovering at positions in Jupiter’s orbit, Trans-Neptunians are beyond the … Continue reading "The solar system and the Blitz"
