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Venus at Western Elongation
Today Venus reaches the point in its orbit called greatest western elongation. As this graphic shows the inner planet Venus, or Mercury, is more or less at a right angle (90o) from the Sun and Earth...
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Split Decision ———//——— Venus at Dichotomy
Click on graphic to see it full size. Today at 2 pm CDT (17 UT) the planet Venus will have reached what is described as its ‘theoretical dichotomy‘. From our perspective on Earth Venus will appear to...
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Mercury at Western Elongation
On Saturday 12 July Mercury, the innermost planet, will reach its orbital position known as greatest western elongation. At that moment Mercury, the Sun, and the Earth, would be arranged in...
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Mercury in Motion
This week my students worked on a lab involving the planet Mercury. Part of the lab was to determine the dates for the next elongations of Mercury and also the degrees of elongation. As they worked...
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Venus at its Brightest
Have you noticed that bright shining ‘star’ in the morning skies? At this time of the year you could be thinking I am referring to Sirius, the brightest night time star. While Sirius, no kidding,...
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Mercury at Western Elongation
On Friday October 16th Mercury, the innermost planet, will reach its orbital position known as greatest western elongation. At that moment Mercury, the Sun, and the Earth, would be arranged in...
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Venus at Western Elongation
Monday October 26th Venus reaches the point in its orbit called greatest western elongation. As this graphic shows the inner planet Venus, or Mercury, is more or less at a right angle (90o) from the...
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Mercury at West Elongation
On Sunday June 5th Mercury, the innermost planet, will reach its orbital position known as greatest western elongation. At that moment Mercury, the Sun, and the Earth, would be arranged in...
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Mercury at Western Elongation
Wednesday September 28th the innermost planet Mercury reaches its greatest western elongation. At this elongation Mercury is to the right or the west side of the Sun as we see it from Earth. From...
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Venus at Western Elongation
Saturday June 3rd Venus reaches the point in its orbit called greatest western elongation. As this graphic shows the inner planet Venus, or Mercury, is more or less at a right angle (90o) from the...
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Mercury at Western Elongation
On Tuesday September 12th Mercury, the innermost planet, will reach its orbital position known as greatest western elongation at 17.9o. At that moment Mercury, the Sun, and the Earth, would be...
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Mercury at Western Elongation
On Monday January 1st Mercury, the innermost planet, will reach its orbital position known as greatest western elongation at 22.7o. At that moment Mercury, the Sun, and the Earth, would be arranged...
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Mercury at Western Elongation
On Sunday April 29th Mercury, the innermost planet, will reach its orbital position known as greatest western elongation at 27.0o. At that moment Mercury, the Sun, and the Earth, would be arranged...
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Mercury at Western Elongation
On Saturday December 15th Mercury, the innermost planet, will reach its orbital position known as greatest western elongation at 21.3o. At that moment Mercury, the Sun, and the Earth, would be...
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Venus Reaches Western Elongation
Sunday January 6th Venus reaches the point in its orbit called greatest western elongation. As this graphic shows the inner planet Venus, or Mercury, is more or less at a right angle (90o) from the...
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Mercury at Western Elongation
On Thursday April 11th Mercury, the innermost planet, will reach its orbital position known as greatest western elongation at 28.0o. At that moment Mercury, the Sun, and the Earth, would be arranged...
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Mercury at Western Elongation
On Friday August 9th Mercury, the innermost planet, will reach its orbital position known as greatest western elongation at 19.0o. At that moment Mercury, the Sun, and the Earth, would be arranged...
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Solar Opposites
Inner planets like all the planets as viewed from Earth appear to be moving from one side of the Sun to the other. As a result the visible planets are seen either in the morning skies when located...
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Two More Go Retro!
Retrograde motion is an apparent motion of any Sun-orbiting object as viewed from one object to another object further from the Sun than the one the viewing is made from. Since we are based on the...
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Venus at Western Elongation
Wednesday August 12th the inner planet Venus reaches the point in its orbit called greatest western elongation. As this graphic shows the inner planet Venus, or Mercury, is more or less at a right...
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