Ele Willoughby, PhD<p>For the <a href="https://spore.social/tags/Spacetober" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Spacetober</span></a> prompt orbit: my portrait of <a href="https://spore.social/tags/mathematician" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathematician</span></a> and <a href="https://spore.social/tags/astronomer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomer</span></a> Johannes Kepler (1571-1630)! We remember him for his role in the Scientific Revolution, and his three laws of planetary motion in particular. His laws modified Copernicus’ heliocentric model; he replaced the circular orbits with elliptical ones & described velocities of planets. Today we know them as:<br>🧵1/n<br> <br><a href="https://spore.social/tags/sciart" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sciart</span></a> <a href="https://spore.social/tags/histsci" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>histsci</span></a> <a href="https://spore.social/tags/MastoArt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MastoArt</span></a> <a href="https://spore.social/tags/Kepler" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Kepler</span></a> <a href="https://spore.social/tags/geometry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geometry</span></a> <a href="https://spore.social/tags/PlatonicSolids" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlatonicSolids</span></a> <a href="https://spore.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathematics</span></a> <a href="https://spore.social/tags/musicOfTheSpheres" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>musicOfTheSpheres</span></a> <a href="https://spore.social/tags/linocut" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>linocut</span></a></p>