Showing posts with label theory. Show all posts
Showing posts with label theory. Show all posts

Questionable Survival Benefits From Some Human Traits - Evolution

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Caucasian and Negroid nasal traits

Dark Matter Theory Is Questioned

Dark matter holds the universe together right?  Well, the theory of dark matter may be widely believed, but there isn't much of it in our part of the universe.  The research team puts forward its findings.  Believers question the accuracy of what they have found.

This isn't a question of how much is out there.  The team found no dark matter at all.  The dark matter theory holds that dark matter should be plentiful, everywhere.  As much as 85 per cent of everything should be dark matter.  The sun should be pulled around with dark matter.  Unfortunately, scientists cannot find it.

Dark matter theory is based on the premise that stars trapped in a gravitational well light years away travel at a fixed speed.  This, with the shape of the well allows a calculation to be made.  Star counts give the amount of ordinary matter.  subtracting this from the mass determined from the calculation gives the amount of dark matter.

The team found that the dark matter theory was questionable.  The speed of the stars did not need dark matter to explain it.
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Venus Orbit Not Constant

It is presumed that planets are changing orbital speed at exceedingly slow rates and it will take millions of years for any significant alteration in the "balance" of orbits in the solar system. This theory has recently been confounded.

Venus was thought to be in a fixed orbit of 243.0185 days, but when astronomers went looking for it, it was found 20 kilometers further back than it should have been. Calculations showed the orbit had slowed by 6.5 minutes.

This will mean that computer computations will have to be altered for future planetary probes to Venus. This is a drastic rethink for scientists. For some reason Venus is affected more by fierce weather conditions and planetary gravitational interaction than other planets.

There could be a simpler explanation. Venus could be travelling at different rates in its orbit due to getting close to other planets. It could be a normal slow down period.
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