Daniel Pomarède<p>Nature Astronomy covers</p><p>A window to the Martian past (2018)</p><p>Featuring phyllosilicates (clays) at Mawrth Vallis, seen here as light-toned outcrops, that could form during warm and wet intermittent periods in a generally cold early Mars.</p><p>Image: Christoph Gross, Freie Universität Berlin.<br>Cover Design: Bethany Vukomanovic</p><p><a href="https://nature.com/natastron/volumes/2/issues/3" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">nature.com/natastron/volumes/2</span><span class="invisible">/issues/3</span></a></p><p><a href="https://mastodon.social/tags/Mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mars</span></a> <a href="https://mastodon.social/tags/MawrthVallis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MawrthVallis</span></a> <a href="https://mastodon.social/tags/phyllosilicates" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>phyllosilicates</span></a> <a href="https://mastodon.social/tags/clay" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>clay</span></a> <a href="https://mastodon.social/tags/clays" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>clays</span></a> <a href="https://mastodon.social/tags/climate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>climate</span></a> <a href="https://mastodon.social/tags/geochemistry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geochemistry</span></a> <a href="https://mastodon.social/tags/planet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>planet</span></a> <a href="https://mastodon.social/tags/planets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>planets</span></a> <a href="https://mastodon.social/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://mastodon.social/tags/research" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>research</span></a> <a href="https://mastodon.social/tags/universe" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>universe</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophysics</span></a></p>