A spinning globe rendered with an orthographic projection, showing country boundaries from the visionscarto World Atlas TopoJSON dataset. The view rotates continuously around its vertical axis using `requestAnimationFrame` to incrementally adjust `projection.rotate`. Built with `d3.geoOrthographic`, `d3.geoPath`, and `d3.geoGraticule`, the animation highlights the graticule lines, country outlines, and a bold sphere outline as the Earth turns.