The other planets also have oppositions once a year except Mars. Because Mars' orbit is closer to earth than the others, its opposition occurs every two years. These planets don't really have a phase seen from earth so you would never see Jupiter in a crescent phase.
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www.astrotulsa.com/Learn/lesson3.asp
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Jupiter - Wikipedia, the free encyclopedia
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Jupiter is the fifth planet from the Sun and the largest planet within the Solar System. It is a gas giant with a mass slightly less than one-thousandth that of the Sun but is two and a half times th...
en.wikipedia.org/wiki/Jupiter
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Planets move past the background stars as seen by someone on Earth. What is the normal direction of this motion? ... How many moons of Jupiter were seen by Galileo?
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physics.ship.edu/~mrc/pfs/108/study1/prctcst1.htm
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The impact site has moved closer to the limb of Jupiter, now near 75 deg. from the midnight meridian and only a few degrees beyond the dark limb as seen from Earth, but all pieces still impact on the back side.
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www.imsc.res.in/Astro/astro/comets/info/comets.html
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Saturn is the sixth planet from the Sun—between the planets of Jupiter and Uranus—and the second-largest planet in the solar system—Jupiter is the largest one. ... Technology news and Jobs Science Saturn easily seen over weekend while in opposition to Earth and Sun...
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www.itwire.com/content/view/9407/1066/
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Because of this arrangement and the fact that the planet will also be at its closest position to the Earth, Saturn will be easily seen at night.; ... Saturn is the sixth planet from the Sun—between the planets of Jupiter and Uranus—and the second-largest planet in the solar system—Jupiter is the largest one.
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www.itwire.com/content/view/9407/1154/
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It was this weird motion of Mars, Jupiter and Saturn that was hardest for early astronomers to explain. ... Opposition The position of two celestial objects when they are 180° apart as viewed from east to west on Earth. When the Sun is one of the objects the other is directly opposite it in the sky and can be seen all night.
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www.kidscosmos.org/kid-stuff/mars-oppositions.html
www.kidscosmos.org/kid-stuff/mars-oppositions.html
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Eclipses, occultations, transits and shadow transits of the Galilean of Jupiter visible from New Zealand in January 2008 ... In general eclipse events take place when the satellite is a small distance away from Jupiter as seen from the Earth. Before opposition, as in January, they occur to the west of the planet.
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www.rasnz.org.nz/SolarSys/JovSatJan.htm
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Eclipses, occultations, transits and shadow transits of the Galilean of Jupiter visible from New Zealand in December 2009 ... In general eclipse events take place when the satellite is a small distance away from Jupiter as seen from the Earth. After opposition, as in December, eclipses take place to the west of Jupiter.
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www.rasnz.org.nz/SolarSys/JovSatDec.htm
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