Is Mars Really Better Mapped Than the Seafloor?

The claim is repeated everywhere. It depends entirely on what mapped means. — Chapters 0:00 Three in the Morning, Central Pacific 1:46 Two Maps, and What "Mapped" Means 3:30 Mapping Mars from Above — The Geometry of Repetition 5:05 The Ocean Hides Its Surface — and What Satellites Can Still See 7:19 Sending Sound Downward — and the Ruler That Changes While It Is Used 8:55 A Fan of Beams — and Vehicles That Get Closer 10:36 The Pace of a Ship, and the Area Beneath the Blue 12:03 Coasts, Ice, and Weather 13:31 The Data After the Voyage — and Borders Under Water 15:07 The Number 27.3 — and Why the Map Matters 16:42 Mars Is Not Equally Detailed Everywhere — Resolution, and Why Mapping Is Not Seeing 19:07 The Answer — Two Maps on a Table 20:38 After the Answer — The Map Begins Aging Immediately 21:48 Final Reframe — The Nearest Frontier — A new episode every week. This channel takes one ordinary thing and follows it until it stops being ordinary. If you spotted an error, say so in the comments. Corrections get pinned. — Credits Mars map (MOLA relief): NASA/JPL/GSFC/USGS, MOLA Science Team (Public Domain) Mars globe: NASA/JPL/USGS, Viking Orbiter 1 mosaic, PIA00407 (Public Domain) Bathymetry: Imagery reproduced from the GEBCO_2026 Grid, GEBCO Compilation Group (2026) Victoria Crater: NASA/JPL-Caltech/University of Arizona/Cornell/Ohio State University, MRO HiRISE, PIA08813 NOAA Ship Okeanos Explorer: Image courtesy of Anna Sagatov, GFOE / NOAA Ocean Exploration (Public Domain) Images (cropped): Earth Observations taken by the Expedition 23 Crew, iss023e032398 (Soichi Noguchi, NASA JSC): NASA (Public Domain) · Fish2800 (NOAA Photo Library); Coral garden Sibelius Seamount (NOAA Office of Ocean Exploration and Research, Deep-Sea Symphony: Exploring the Musicians Seamounts); Explosion near summit of West Mata submarine volcano (NOAA/National Science Foundation): NOAA (Public Domain, U.S. Government work) via Wikimedia Commons · CGFZ-mapping (Image court