This world map visualization displays meteorite landing locations, using a custom D3.js projection and geoPath to render country outlines and graticules. Each meteorite is plotted as a circle with size scaled by its mass and color-coded by broad category—chondrites, achondrites, irons, or stony-irons—derived from the recclass field, with a legend explaining the scheme. The data comes from a CSV file, and the map’s base geography is loaded from TopoJSON via topojson-client.