<story><title>A 5.7 Terapixel Mosaic of the Surface of Mars</title><url>https://murray-lab.caltech.edu/CTX/</url></story><parent_chain><item><author>q87b</author><text>It&amp;#x27;s quite amazing and simultaneously ridiculous that we have a public 3D model of a distant planet at 5 meters resolution while the best available free and public models of Earth are at 30 meters.</text></item></parent_chain><comment><author>aannex</author><text>We actually don&amp;#x27;t have a 5 meter global elevation for Mars. The imagery is 5 mpp but the elevation data used in the links is MOLA and is closer to 500 meters per pixel (with another merged product at 200 mpp). It is almost more weird&amp;#x2F;cool that we have hundreds (thousands?) of 1 mpp elevation models for small areas of Mars from HiRISE (available for free from the PDS) and larger swaths at ~20 meters per pixel from CTX imagery used in this global mosaic, but still not close to a global product.&lt;p&gt;various sources:
1. &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;astrogeology.usgs.gov&amp;#x2F;search&amp;#x2F;details&amp;#x2F;Mars&amp;#x2F;GlobalSurveyor&amp;#x2F;MOLA&amp;#x2F;Mars_MGS_MOLA_DEM_mosaic_global_463m&quot; rel=&quot;nofollow noreferrer&quot;&gt;https:&amp;#x2F;&amp;#x2F;astrogeology.usgs.gov&amp;#x2F;search&amp;#x2F;details&amp;#x2F;Mars&amp;#x2F;GlobalSurv...&lt;/a&gt;
2. &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;astrogeology.usgs.gov&amp;#x2F;search&amp;#x2F;map&amp;#x2F;Mars&amp;#x2F;Topography&amp;#x2F;HRSC_MOLA_Blend&amp;#x2F;Mars_HRSC_MOLA_BlendDEM_Global_200mp&quot; rel=&quot;nofollow noreferrer&quot;&gt;https:&amp;#x2F;&amp;#x2F;astrogeology.usgs.gov&amp;#x2F;search&amp;#x2F;map&amp;#x2F;Mars&amp;#x2F;Topography&amp;#x2F;HRS...&lt;/a&gt;
3. &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.uahirise.org&amp;#x2F;dtm&amp;#x2F;&quot; rel=&quot;nofollow noreferrer&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.uahirise.org&amp;#x2F;dtm&amp;#x2F;&lt;/a&gt;
4. &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;stac.astrogeology.usgs.gov&amp;#x2F;docs&amp;#x2F;data&amp;#x2F;mars&amp;#x2F;ctxdtms&amp;#x2F;&quot; rel=&quot;nofollow noreferrer&quot;&gt;https:&amp;#x2F;&amp;#x2F;stac.astrogeology.usgs.gov&amp;#x2F;docs&amp;#x2F;data&amp;#x2F;mars&amp;#x2F;ctxdtms&amp;#x2F;&lt;/a&gt;</text></comment>
<story><title>A 5.7 Terapixel Mosaic of the Surface of Mars</title><url>https://murray-lab.caltech.edu/CTX/</url></story><parent_chain><item><author>q87b</author><text>It&amp;#x27;s quite amazing and simultaneously ridiculous that we have a public 3D model of a distant planet at 5 meters resolution while the best available free and public models of Earth are at 30 meters.</text></item></parent_chain><comment><author>YetAnotherNick</author><text>WorldView-3 claims to be 31cm resolution: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;worldview3.digitalglobe.com&amp;#x2F;&quot; rel=&quot;nofollow noreferrer&quot;&gt;https:&amp;#x2F;&amp;#x2F;worldview3.digitalglobe.com&amp;#x2F;&lt;/a&gt;</text></comment>