The Great Barrier Reef is visible from space
The Great Barrier Reef, Earth's largest living structure, is the only natural formation of its kind so vast and vivid that it's visible from space.
The Great Barrier Reef is so enormous it's the only living structure on Earth visible to the naked eye from low Earth orbit. This incredible natural wonder, located off Australia's coast, stretches over 2,300 kilometers and covers an area roughly the size of Italy. Astronauts and satellite imagery confirm its vibrant colors stand out against the ocean.
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