Are You Closer To The Sea or Outer Space? Explained: This map shows that most of Earth’s land, even in many smaller countries, is closer to outer space (just 100 km/62 miles up) than to the sea. Only the thin red coastal strips are nearer to the ocean. However, about 40–45% of the world’s population lives within the 100 km (62 miles) of the sea, meaning that nearly half of humanity is in that thin red coastal strip on the map. Most land is closer to space, but almost as many people live closer to the sea than space. More about the map: brilliantmaps.com/sea-vs-sap…