Earthshine and moonshine

readme.md

@@ -143,7 +143,8 @@ cargo run --release -p resolved-cli -- render \
 M1 is complete: the library renders Earth, Moon, Sun and targets to DN
 through `Renderer`, the CLI renders scene files, and the benchmarks give the
 L0 / C0 baseline above. M2 is in progress: lighting L1 so far draws Earth's
-surface from Blue Marble and shadows on the target. The work is tracked as
+surface from Blue Marble, shadows on the target, and light from Earth and the
+Moon on it. The work is tracked as
 Gitea milestones, each split into one issue per change:
 
 | Milestone | Scope |