A rotating orthographic globe displays world landmasses in green against a dark ocean sphere, with graticule lines marking latitude and longitude. The visualization continuously spins using `d3.timer` to update the projection’s rotation. It renders geographic data from `world-atlas@2/countries-110m.json` via TopoJSON, converting features with `topojson.feature` and projecting them through `d3.geoOrthographic` and `d3.geoPath` in an SVG.