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Mars

From The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide
Fourth planet from the Sun. It is much smaller than Venus or Earth, with a mass 0.11 that of Earth. Mars is slightly pear-shaped, with a low, level northern hemisphere, which is comparatively uncratered and geologically ‘young’, and a heavily cratered ‘ancient’ southern hemisphere. Mean distance from the Sun 227.9 million km/141.6 million mi Equatorial diameter 6,780 km/4,210 mi Rotation period 24 hours 37 minutes Year 687 Earth days Atmosphere 95% carbon dioxide, 3% nitrogen, 1.5% argon, and 0.15% oxygen. Red atmospheric dust from the surface whipped up by winds of up to 450 kph/280 mph accounts for the light pink sky. The surface pressure is less than 1% of the Earth's atmospheric pressure at sea level Surface the landscape is a dusty, red, eroded lava plain. Mars has white polar caps (water ice and frozen carbon dioxide) that advance and retreat with the seasons Satellites two small satellites: Phobos and Deimos There are four enormous volcanoes near the equator, of which the…
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Full text Article Mars

From Astronomy Encyclopedia
Mars The atmosphere on Mars is extremely tenuous....
Fourth major planet from the Sun, popularly known as the Red Planet. Mars is intermediate in size between the Earth and Mercury. Mars' coloration is a function of widespread regions of reddish dust, which on occasions may be raised high into the tenuous Martian atmosphere by winds. A great dust…
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Full text Article Mars

From Philip's Encyclopedia
Fourth planet from the Sun. Mars appears red because of the high iron content of its surface crust, and is known as the Red Planet. The atmosphere consists of 95% carbon dioxide, 2.5% nitrogen, and 1.5% argon, with smaller quantities of oxygen, carbon monoxide and water vapour. Its axial tilt is…
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These pancake-like domes, imaged on...
The movement of Mars across the sky had been studied in some detail by a number of civilisations of the first millennium BC. But it was not until Johannes Kepler studied its movement in the first decade of the seventeenth century, using pre-telescopic observations made by Tycho Brahe and himself, …
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Full text Article Mars,

From The Oxford Companion to Sugar and Sweets
Inc. is the largest candy company in the United States, boasting such venerable brands as M&M's, Milky Way, Three Musketeers, Snickers, Skittles, Starburst Fruit Chews, and Twix. With its purchase in 2008 of the chewing gum giant Wm. Wrigley Jr. Co., it added brands like Life Savers, Altoids, …
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Full text Article MARS

From Gaither's Dictionary of Scientific Quotations
American astronomer To save my soul I can't believe in the canals as Schiaparelli draws them…. I verily believe…that the canals as depicted by Schiaparelli are a fallacy and that they will be so proved before many oppositions are past. NASA Serial Publication Letter to Simon Newcomb, September 11, …
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Full text Article Mars

From The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide
Fourth planet from the Sun. It is much smaller than Venus or Earth, with a mass 0.11 that of Earth. Mars is slightly pear-shaped, with a low, level northern hemisphere, which is comparatively uncratered and geologically ‘young’, and a heavily cratered ‘ancient’ southern hemisphere. Mean distance…
| 976 words
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Full text Article Mars

From Encyclopedia of Ancient Rome
The Temple of Mars Ultor (Courtesy of Prof. Felix...
Roman god of war. Mars was second only to Jupiter in power and importance. His origin is uncertain, although he eventually became identified with the Greek god Ares, sharing his patronage of conquest and conflict. He may have started as an agricultural or fertility god, worshipped by the Latins and…
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From The Werewolf Book: The Encyclopedia of Shape-Shifting Beings
Mars and Saturn are the two planets in astrological tradition that are considered “malefic.” Mars, like the Roman god of the same name (the god Ares to the ancient Greeks), is representative of violent energy, aggressiveness, destruction, hostility, and war. According to astrological determinations, …
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From The Classical Tradition
Roman god of war, thus symbol of a society that for centuries was thought of as essentially belligerent. Mars was identical with Greek Ares, although Ares never had a notorious position in the Greek pantheon. One of the most prominent and worshiped gods of Rome, Mars lent his name to a Roman…
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From Britannica Concise Encyclopedia
An especially serene view of Mars (Tharsis side),...
Fourth planet from the Sun, named after the Roman god of war. Its mean distance from the Sun is 228 million km (142 million mi). Its day is 24 hours 37 minutes and its year about 687 Earth days. It has two small moons, Phobos and Deimos. Mars’s equatorial diameter is 3,396 km (2,110 mi), about half…
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