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diff --git a/src/blog/the-physics-behind-a-black-hole-shader/img/Illustration_of_great-circle_distance.svg.png b/src/blog/the-physics-behind-a-black-hole-shader/img/Illustration_of_great-circle_distance.svg.png
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+++ b/src/blog/the-physics-behind-a-black-hole-shader/img/Illustration_of_great-circle_distance.svg.png
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diff --git a/src/blog/the-physics-behind-a-black-hole-shader/index.md b/src/blog/the-physics-behind-a-black-hole-shader/index.md
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@@ -73,7 +73,7 @@ However, what if our surface isn't flat?
Imagine two points on a sphere, what is the shortest distance between them?
Obviously, it's an arc of a circle and extending it to it's maximum possible length, we get a [great circle](https://en.wikipedia.org/wiki/Great_circle).
-![](https://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Illustration_of_great-circle_distance.svg/480px-Illustration_of_great-circle_distance.svg.png)
+![](./img/Illustration_of_great-circle_distance.svg.png)
*Image by CheCheDaWaff on [Wikipedia](https://commons.wikimedia.org/w/index.php?curid=48187293)*
Now, what does it mean to go "forwards"?