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[deleted] t1_iwyg0kh wrote on November 19, 2022 at 8:52 AM

Reply to comment by WontStopAtSigns in Mars was once covered by 300-meter deep oceans, study shows by magenta_placenta

https://www.researchgate.net/figure/Cross-section-through-the-Earth_fig8_257941642

Here's a little image. Shows how thin the oceans are on earth.