1 rich Libsyn https://www.libsyn.com 90 600 Here we look at a few Mars related topics, including possible karstic (water eroded) caves and other findings around the solar systems. &amp;nbsp; Image (open access) from Ravi, Sharma et al 2025 APJL 993 L36 &amp;nbsp; Allan I Carswell Observatory Presents: York Universe https://sites.libsyn.com/546647 <iframe title="Libsyn Player" style="border: none" src="//html5-player.libsyn.com/embed/episode/id/39159240/height/90/theme/custom/thumbnail/yes/direction/forward/render-playlist/no/custom-color/88AA3C/" height="90" width="600" scrolling="no" allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe> https://assets.libsyn.com/secure/content/195800205