add sunspot activity

Author: chrisorban

docs/activities.html

@@ -199,7 +199,7 @@
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     <div id="quarto-margin-sidebar" class="sidebar margin-sidebar">
 
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 <!-- main -->
 <main class="content" id="quarto-document-content">
 
@@ -1830,7 +1830,43 @@ <h5 class="no-anchor card-title listing-title">
 </div>
 </a>
 </div>
-<div class="g-col-1" data-index="42" data-categories="QWR2YW5jZWQlMjBIUyUyQ1BoeXNpY3MlMkNFbGVjdHJvbWFnbmV0aXNtJTJDSmF2YXNjcmlwdCUyQ1RyaWdvbm9tZXRyeQ==" data-listing-file-modified-sort="1750986419126" data-listing-reading-time-sort="1" data-listing-word-count-sort="134">
+<div class="g-col-1" data-index="42" data-categories="RGF0YSUyMFNjaWVuY2UlMkNBc3Ryb25vbXklMkNTcGFjZSUyQ1NwcmVhZHNoZWV0cw==" data-listing-file-modified-sort="1753337639717" data-listing-reading-time-sort="8" data-listing-word-count-sort="1486">
+<a href="./projects/sunspots.html" class="quarto-grid-link">
+<div class="quarto-grid-item card h-100 card-left">
+<p class="card-img-top">
+<img loading="lazy" data-src="./img/sunspots.jpg" class="thumbnail-image card-img" style="height: 150px;">
+</p>
+<div class="card-body post-contents">
+<h5 class="no-anchor card-title listing-title">
+Sunspots
+</h5>
+<div class="listing-categories">
+<div class="listing-category" onclick="window.quartoListingCategory('RGF0YSUyMFNjaWVuY2U='); return false;">
+Data Science
+</div>
+<div class="listing-category" onclick="window.quartoListingCategory('QXN0cm9ub215'); return false;">
+Astronomy
+</div>
+<div class="listing-category" onclick="window.quartoListingCategory('U3BhY2U='); return false;">
+Space
+</div>
+<div class="listing-category" onclick="window.quartoListingCategory('U3ByZWFkc2hlZXRz'); return false;">
+Spreadsheets
+</div>
+</div>
+<div class="card-text listing-description">
+People have been observing the sun for centuries. Let’s look at the data and see what we can learn!
+</div>
+<div class="card-attribution card-text-small start">
+<div class="listing-author">
+
+</div>
+</div>
+</div>
+</div>
+</a>
+</div>
+<div class="g-col-1" data-index="43" data-categories="QWR2YW5jZWQlMjBIUyUyQ1BoeXNpY3MlMkNFbGVjdHJvbWFnbmV0aXNtJTJDSmF2YXNjcmlwdCUyQ1RyaWdvbm9tZXRyeQ==" data-listing-file-modified-sort="1750986419126" data-listing-reading-time-sort="1" data-listing-word-count-sort="134">
 <a href="./projects/waveinterference.html" class="quarto-grid-link">
 <div class="quarto-grid-item card h-100 card-left">
 <p class="card-img-top">

docs/img/sun_funnel.jpg

@@ -44,6 +44,7 @@
       "/projects/slingshotgravity.html",
       "/projects/solarcell.html",
       "/projects/solarsystem.html",
+      "/projects/sunspots.html",
       "/projects/waveinterference.html"
     ]
   }