This bar chart shows the total number of rockets launched each year, with bars segmented by mission status (success or failure) to add a categorical color dimension. The visualization uses Vega-Lite, with data loaded via D3’s `csv` function from a Kaggle-sourced CSV file. The `groupby` transformation aggregates counts per year and status, while the tooltip displays the raw count. Custom axis styling and a dark color scheme in the config file improve readability against a full-window canvas.