Papahānaumokuākea area U.S. national parks combined

Papahānaumokuākea exceeds all U.S. national parks combined

~140,000 sq mi

Papahānaumokuākea Marine National Monument protects reefs, atolls and surrounding Pacific waters in the Northwestern Hawaiian Islands. Its area is greater than that of all U.S. national parks combined.

Moscow has warmer winters than Canadian cities at similar latitudes

Moscow is far inland, yet its winters are often milder than those in parts of Canada and Siberia at comparable latitudes. One reason is the Atlantic Ocean: prevailing winds carry relatively mild maritime air deep into Europe. Latitude alone tells surprisingly little about how cold a winter will be.

The Sun’s corona is far hotter than its surface

1–2 million K

The corona, the Sun’s outer atmosphere, reaches 1,000,000–2,000,000 K, while the photosphere beneath it is about 6,000 K. Proposed ways to heat the corona include waves and magnetic reconnection, but the explanation remains unresolved.

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Papahānaumokuākea area U.S. national parks combined

Papahānaumokuākea exceeds all U.S. national parks combined

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