update the blackhole icon

Author: chrisorban

docs/activities.html

@@ -622,11 +622,11 @@ <h5 class="no-anchor card-title listing-title">
 </div>
 </a>
 </div>
-<div class="g-col-1" data-index="10" data-categories="QWR2YW5jZWQlMjBIUyUyQ0FzdHJvbm9teSUyQ1BoeXNpY3MlMkNKYXZhc2NyaXB0JTJDVHJpZ29ub21ldHJ5" data-listing-file-modified-sort="1749570054731" data-listing-reading-time-sort="1" data-listing-word-count-sort="58">
+<div class="g-col-1" data-index="10" data-categories="QWR2YW5jZWQlMjBIUyUyQ0FzdHJvbm9teSUyQ1BoeXNpY3MlMkNKYXZhc2NyaXB0JTJDVHJpZ29ub21ldHJ5" data-listing-file-modified-sort="1751948515384" data-listing-reading-time-sort="1" data-listing-word-count-sort="59">
 <a href="./projects/black.html" class="quarto-grid-link">
 <div class="quarto-grid-item card h-100 card-left">
 <p class="card-img-top">
-<img loading="lazy" src="./img/black.png" class="thumbnail-image card-img" style="height: 150px;">
+<img loading="lazy" src="./img/blackhole.png" class="thumbnail-image card-img" style="height: 150px;">
 </p>
 <div class="card-body post-contents">
 <h5 class="no-anchor card-title listing-title">

docs/img/blackhole.png

@@ -175,7 +175,11 @@ <h1 class="title">Escape Velocity and Newtonian Black Holes</h1>
 </header>
 
 
-<p><img src="../img/black.png" class="img-fluid"></p>
+<div class="quarto-figure quarto-figure-center">
+<figure class="figure">
+<p><img src="../img/blackhole.png" class="img-fluid quarto-figure quarto-figure-center figure-img" width="500"></p>
+</figure>
+</div>
 <p>That activity explores the behavior of objects like planets or comets interacting with a massive object like the sun.</p>
 <section id="links-to-activity" class="level2">
 <h2 class="anchored" data-anchor-id="links-to-activity">Links to Activity</h2>

docs/projects/black.html

@@ -1,6 +1,6 @@
 ---
 title: "Escape Velocity and Newtonian Black Holes"
-image: ../img/black.png
+image: ../img/blackhole.png
 categories:
   - Advanced HS
   - Astronomy
@@ -9,7 +9,7 @@ categories:
   - Trigonometry
 ---
 
-![](../img/black.png)
+![](../img/blackhole.png){width=500 fig-align=center}
 
 That activity explores the behavior of objects like planets or comets interacting with a massive object like the sun.