NS: Are Venus and Earth in a long-distance relationship?

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bystander
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NS: Are Venus and Earth in a long-distance relationship?

Post by bystander » Tue Mar 16, 2010 7:28 pm

Are Venus and Earth in a long-distance relationship?
New Scientist Space - 2010 March 16
The heart of Venus may belong to Earth. Our planet could be tugging on the core of Venus, exerting control over its spin.

Whenever Venus and Earth arrive at the closest point in their orbits, Venus always presents the same face to us. This could mean that Earth's gravity is tugging subtly on Venus, affecting its rotation rate. That idea, raised decades ago, was disregarded when it turned out that Venus is spinning too fast to be in such a gravitational "resonance".

But Earth could still be pulling on Venus by controlling its core, according to calculations by Gérard Caudal of the University of Versailles-Saint Quentin, France.

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neufer
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Re: NS: Are Venus and Earth in a long-distance relationship?

Post by neufer » Tue Mar 16, 2010 9:39 pm

bystander wrote:Are Venus and Earth in a long-distance relationship?
New Scientist Space - 2010 March 16
The heart of Venus may belong to Earth. Our planet could be tugging on the core of Venus, exerting control over its spin.

Whenever Venus and Earth arrive at the closest point in their orbits, Venus always presents the same face to us. This could mean that Earth's gravity is tugging subtly on Venus, affecting its rotation rate. That idea, raised decades ago, was disregarded when it turned out that Venus is spinning too fast to be in such a gravitational "resonance".

But Earth could still be pulling on Venus by controlling its core, according to calculations by Gérard Caudal of the University of Versailles-Saint Quentin, France.
"It turned out that Venus is spinning too fast???"

It is hard to imagine how Venus could rotate any slower
and still present the same face to earth.

Venus Sidereal rotation period = -243.018 5 day

Code: Select all

2922.05 earth days =  08 earth years
2921.11 earth days =  13 Venus years
2919.60 earth days =  05 Earth/ Venus Synodic cycles
2916.22 earth days = -12 Venus Sidereal days
Art Neuendorffer