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The Planets: Mercury

Top of Page Mercury, the smallest planet in our solar system and the closest planet to the Sun, has long been a source of fascination for astronomers and space enthusiasts alike. Despite its small…

Earth

Origin of EarthEarth TodayContinental DriftEarth's AtmosphereThe Seasons Earth, circling the Sun at an average distance of 93 million miles, is the fifth-largest planet and the third from the…

tap dance

(Encyclopedia) tap dance, theatrical dance form in which the dancer, wearing shoes with metal heel and toe taps, beats out complex, syncopated rhythms on the floor. After a slump in popularity in…

Ralph Waldo Emerson: Mithridates

MithridatesI cannot spare water or wine, Tobacco-leaf, or poppy, or rose; From the earth-poles to the Line, All between that works or grows, Every thing is kin of mine. Give me agates for…

Saturn's Rings

Saturn's spectacular ring system is unique in the solar system, with uncountable billions of tiny particles of water ice (with traces of other material) in orbit around the planet. The ring…

Earth Today

As a result of radioactive heating over millions of years, Earth's molten core is probably fairly hot today, around 11,000°F. By comparison, lead melts at around 800°F. Most of Earth's 2,100…