This visualization shows the number of space launches over time by nation, filtered to the USA, China, USSR, Russia, and Japan. It uses semi-transparent, stroked circles to represent each launch, with time on the x-axis and nation on the y-axis. The example is built with the vega-lite-api, which registers Vega and Vega-Lite, and loads data from a CSV via d3.csv. The chart’s appearance is customized through a shared config object, and it renders as a full-window SVG with tooltips provided by vega-tooltip.