Is the Great Barrier Reef longer than the Moon is wide?
No. The Great Barrier Reef, at 2,300 km, is shorter than the Moon is wide: the Moon measures 3,475 km across, about 1.5 times as much.
The reef is about two-thirds as long as the Moon is wide.
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Where the numbers come from
Each value was checked against two independent sources, quoted on its page. Details: Great Barrier Reef and The Moon.
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