satellite orbits added

arunp77 · Aug 23, 2024 · 6abda9d · 6abda9d
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diff --git a/earth-observation.html b/earth-observation.html
@@ -343,6 +343,13 @@ <h3 id="orbits">Earth Satellite Orbits: A Celestial Ballet</h3>
         <h2>References</h2>
         <ul>
           <li>My github Repositories on <a href="https://arunp77.github.io/Remote-sensing.html" target="_blank">Remote sensing fundamentals.</a>.</li>
+          <li><a href="https://www.esa.int/ESA_Multimedia/Images/2020/03/Low_Earth_orbit" target="_blank">Low Earth orbit (LEO)</a></li>
+          <li><a href="https://www.esa.int/ESA_Multimedia/Images/2020/03/Geostationary_orbit" target="_blank">Geostationary orbit (GEO)</a></li>
+          <li><a href="https://www.esa.int/ESA_Multimedia/Images/2014/07/Galileo_constellation" target="_blank">Medium Earth orbit (MEO)</a></li>
+          <li><a href="https://www.esa.int/ESA_Multimedia/Images/2020/03/Polar_and_Sun-synchronous_orbit" target="_blank">Polar and Sun-synchronous orbit</a></li>
+          <li><a href="https://www.esa.int/ESA_Multimedia/Images/2020/03/Geostationary_transfer_orbit" target="_blank">Transfer orbits and geostationary transfer orbit (GTO)</a></li>
+          <li><a href="https://www.esa.int/ESA_Multimedia/Images/2019/07/Avoiding_Earth_s_shadow" target="_blank">Lagrange points</a></li>
+          <li><a href="https://www.esa.int/ESA_Multimedia/Images/2020/03/Geostationary_transfer_orbit" target="_blank">Geostationary transfer orbit (GTO)</a></li>
         </ul>
       </section>