diff --git a/Readme.md b/Readme.md
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--- a/Readme.md
+++ b/Readme.md
@@ -5,6 +5,11 @@ Runs in a browser. Just serve `index.html` and associated `css` and `js`.
 
 Uses `npm` for `eslint`.
 
+Screenshots
+-----------
+
+![Simulation of a small body orbiting a pair of larger ones](./gravity-simulator-2.png "Gravity Simulator Screenshot 2")
+
 TODO
 ----
 
diff --git a/gravity-simulator-2.png b/gravity-simulator-2.png
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index 0000000..e7919a4
Binary files /dev/null and b/gravity-simulator-2.png differ