Simeon Schmauß<p>Two years ago, NASA's Curiosity Mars rover captured this feathery iridescent cloud after sunset. The color is created by diffraction effects when sunlight is scattered by small CO2 particles in the cloud.</p><p>Full panorama: <a href="https://flic.kr/p/2qJvszB" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">flic.kr/p/2qJvszB</span><span class="invisible"></span></a></p><p>Credit: NASA/JPL-Caltech/MSSS/Simeon Schmauß</p><p><a href="https://fosstodon.org/tags/Noctilucent" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Noctilucent</span></a> <a href="https://fosstodon.org/tags/iridescent" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>iridescent</span></a> <a href="https://fosstodon.org/tags/nacreous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nacreous</span></a> <a href="https://fosstodon.org/tags/cloud" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cloud</span></a> <a href="https://fosstodon.org/tags/mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mars</span></a> <a href="https://fosstodon.org/tags/curiosity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>curiosity</span></a> <a href="https://fosstodon.org/tags/nasa" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nasa</span></a> <a href="https://fosstodon.org/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a></p>