Moon - Wikipedia
1 天前 · The Moon is Earth's only natural satellite. It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Tidal forces between Earth and the Moon have synchronized the Moon's orbital period …
List of stories set in a future now in the past - Wikipedia
1 天前 · Initially set in 1990, but left vague in later issues. Set in a space opera future in which the Solar System has been colonised ... Street Prison in Florida, nicknamed the "Aquarium", but …
Fractal - Wikipedia
1 天前 · A simple fractal tree A fractal "tree" to eleven iterations. The word "fractal" often has different connotations for mathematicians and the general public, where the public is more …
Leadership - Wikipedia
1 天前 · An APEC leader setting the tone for the 2013 APEC CEO summit with an opening speech. Leadership, is defined as the ability of an individual, group, or organization to "lead", …
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