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Heraclitus even believed that Mercury and Venus orbit the Sun, not the Earth. ... Mercury's orbit is highly eccentric; at perihelion it is only 46 million km from the Sun but at aphelion it is 70 million. The position of the perihelion precesses around the Sun at a very slow rate.
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www.nineplanets.org/mercury.html
www.nineplanets.org/mercury.html
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Since Pluto isn't a planet, Mercury now takes the record for the planet with the most eccentric orbit. In fact, its orbit ranges quite dramatically, ranging ... In addition to this highly eccentric orbit, Mercury also has a fairly steep inclination in its orbit. If you set the plane of the Earth's orbit at 0°,
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www.universetoday.com/guide-to-space/mercury/orbit-of-m...
www.universetoday.com/guide-to-space/mercury/orbit-of-mercury/
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Mercury (planet) - Wikipedia, the free encyclopedia
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Mercury is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 days. The orbit of Mercury has the highest eccentricity of all the Solar System planets, and it ha...
en.wikipedia.org/wiki/Mercury_(planet)
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Tests of general relativity - Wikipedia, the free encyclopedia
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At its introduction in 1915, the general theory of relativity did not have a solid empirical foundation. It was known that it correctly accounted for the "anomalous" precession of the perihelion of Me...
en.wikipedia.org/wiki/Tests_of_general_relativity
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Although Mercury is not tidally locked to the Sun, its rotational period is tidally coupled to its orbital period. Mercury rotates one and a half times during each orbit. Because of this 3:2 resonance, a day on Mercury (sun rise to sun rise) is 176 Earth days long as shown by the following diagram.
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www.solarviews.com/eng/mercury.htm
www.solarviews.com/eng/mercury.htm
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Mercury/Earth Comparison ... orbital velocity (km/s) 58.98 30.29 1.947 Min. orbital velocity (km/s) 38.86 29.29 1.327 Orbit inclination (deg) 7.00 0.00 - Orbit eccentricity 0.2056 0.0167 12.311 Sidereal rotation period (hrs) 1407.6 23.9345 58.785 Length of day (hrs) 4222.6 24.0000 175.942 Obliquity to orbit (deg) ~0 23.45 0.
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nssdc.gsfc.nasa.gov/planetary/factsheet/mercuryfact.htm...
nssdc.gsfc.nasa.gov/planetary/factsheet/mercuryfact.html
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Mercury revolves around the sun very quickly, but rotates around its axis very, very slowly. ... LENGTH OF A DAY AND YEAR ON MERCURY; Mercury revolves around the sun very quickly, but rotates around its axis very, very slowly. One day on Mercury (sunrise to sunrise) is longer than one year on Mercury (one orbit around the Sun).
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www.enchantedlearning.com/subjects/astronomy/planets/me...
www.enchantedlearning.com/subjects/astronomy/planets/mercury/mercuryday.shtml
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NASA's MESSENGER probe will be the first spacecraft to image the whole planet, making its initial flyby of Mercury Jan. 14 as part of a long process to settle into orbit. ... Do a band of small asteroids dubbed "vulcanoids" lie inward of Mercury's orbit, hidden in the glare of the sun?
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www.space.com/scienceastronomy/080114-mm-mystery-mercur...
www.space.com/scienceastronomy/080114-mm-mystery-mercury.html
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David McCann outlines the astrological significance of Mercury's movement, orbit and phases ... Mercury's Orbit ... The orbit of Mercury has other curious features. Its eccentricity and inclination are greater than those of any other planet except Pluto, but its unique feature is that the year is actually shorter than the solar day!
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www.skyscript.co.uk/mercuryorbit.html
www.skyscript.co.uk/mercuryorbit.html
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