On Mars, internal heat may have powered habitable hotspots long ago - Space.com
- On Mars, internal heat may have powered habitable hotspots long ago Space.com
- Potential life on ancient Mars likely lived below the surface, study says CNN
- Scientists find new evidence for subterranean life on Mars Inverse
- Mars colonists could get fuel and oxygen from water on the Red Planet Space.com
- Heat inside Mars may have melted ice and made watery habitats for life New Scientist
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