Mercury is a naturally occurring element in minerals, rocks, soil, water, air, plants, and animals. The predominant forms in the atmosphere, water, and aerobic soils and sediments are elemental and mercuric mercury; while cinnabar is commonly found...

Mercury is a transition metal, one of the elements found in the middle of the periodic table in Rows 4, 5, and 6 between Groups 2 and 3. Its atomic number if 80, its atomic mass is 200.59, and its chemical symbol is Hg. Mercury is the only liquid...

Mercury is one of the five planets visible to the naked eye. Because it is so close to the Sun however, it is only visible for about one hour after sunset or for the same length of time prior to sunrise. Even though it can become quite bright, it never...

Mercury is the innermost and second smallest planet (4,878 kilometers [3,024 miles] in diameter) in the solar system (Pluto is the smallest). It has no known moons. As of the beginning of the twenty-first century, Mariner 10 had been the only...

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Mercury: The solar system's inner frontier Not far from the sun lies a tiny planet with a big image problem. A fleeting presence often hidden by the sun's glare, Mercury is the neglected child of the solar system. Planetary scientists have...

On any clear evening this week, look low in the fading twilight toward the west-northwest. There you'll see what look like two stars glimmering through the dusk. The brighter one is Jupiter. The other is the planet Mercury. You've undoubtedly seen Jupiter...

For more information on fish and mercury, check out the following websites: •National Geographic's TheGreenGuide offers a comprehensive list of the best seafood choices—those that are not only low in mercury but are also not over-fished or farmed destructively—as well as those to avoid....

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