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The 'unrealistic' is that 30au and 200au, given the size of the object necessary, would be within the ability of current technology to locate. If in the Oort, which could hide it from existing technology, the distance would be too great and the object would have to be black hole massive.
Originally posted by CherubBaby
reply to post by phishyblankwaters
I see so using ATS for example, the people that also post that they are noticing strange positions and aspects of the moon that they can never remember seeing before. Are they doing beer enemas? Maybe they are just stupid? Your entitled to your opinions. I have no problem with the right to speak your mind. Maybe if you had bothered to think about the right to express yourself, You would know that I have the right to share in here just as much as you do or anyone else and I dont have to have a degree in astronomy to express what I see. There would be alot more people in these types of forums in my opinion , maybe sharing similar experiences if they weren't afraid of being devowered by those who disagree with them. Once again just my observation and opinion.
Yours is noted and thanks.
Ephemerides or at least the day to day or second to second or even fractional second to fractional second need algorithms and super computers to generate their numbers.
In 1989, Jacques Laskar of the Bureau des Longitudes in Paris published the results of his numerical integration of the Solar System over 200 million years. These were not the full equations of motion, but rather averaged equations along the lines of those used by Laplace. Unlike Laplace, however, Laskar's equations had some 150,000 terms. Laskar's work showed that the Earth's orbit (as well as the orbits of all the inner planets) is chaotic and that an error as small as 15 metres in measuring the position of the Earth today would make it impossible to predict where the Earth would be in its orbit in just over 100 million years' time.
Laskar's results still have to be confirmed by integrating the full equations of motion, but this will have to wait until the next generation of supercomputers arrives.
Question:
Why is the crescent Moon sometimes lit on the bottom?
Answer:
A careful observer will certainly notice that over the period of months, the crescent of the Moon does indeed seem to go from being lit on the "bottom" of the Moon to being lit on the side of the Moon. So what is happening to make the Moon look different? It is all a result of the Moon's orbit around the Earth, and the Earth's orbit around the Sun. And exactly when you see the Moon in the shape of a 'U' (lit on the bottom) rather than a backward 'C' (lit on the side) depends on what latitude you are at. But the explanation is the same regardless of when you see it from your location.
We see the Moon in the night sky because it is reflecting light from the Sun. The Moon does not generate any light of its own. So the lit part of the Moon always points toward the Sun. Now as you can see in the diagram, as the Earth travels aroound the Sun, the tilt of the Earth on its axis sometimes points the northern hemisphere toward the Sun and sometimes points the southern hemisphere toward the Sun. This is why we have seasons here on Earth. But this also changes the apparent path of the Moon across the night sky when you are on the Earth looking out at it. Sometimes it travels at an angle toward the horizon and sometimes it travels straight down toward the horizon. When the crescent Moon travels straight down toward the horizon, you will get the 'U' shaped Moon. Many describe this as when the 'horns' of the Moon point upward. This can happen once or twice a year, again depending on the latitude of your location.
Folklore Can Be Confusing!
This change in the appearance of the Moon has been observed for a very long time. And many conflicting definitions have been given to these lunar appearances.
Some ancient skywatchers spoke of the crescent Moon when the bottom seems to be lit as the "wet moon". They thought it looked like a bowl which could fill up with the rain and snow of the winter season. In Hawaiian astrology, Kaelo the Water Bearer rules from January 20 - February 18. According to the Hawaiian Calendar, Kaelo is the "Dripping Wet Moon" month. However, many other cultures have defined the Moon when lit on the bottom as the "dry moon" since in that configuration, the Moon is "holding in the water".
As winter passes into spring and summer, the crescent shape slowly shifts toward the south and begins to "stand on its end". To some ancients, this represented the Moon assuming a pouring position in which it will lose its water and result in the great summer rains. The result was the creation of a "dry moon", one which held no water because it all poured out. On the other hand, other cultures said that such a moon is a wet moon because it allowed the water to pour out!
This diagram shows typical paths for the Moon during the year (and the resulting look of the waxing crescent Moon) for a specific latutude in the northern hemisphere. Notice that during winter, the Moon sets north of west and follows a path almost straight down to the horizon. During the summer, the Moon sets south of west and follows a slanted path down to the horizon.
Originally posted by Phage
reply to post by luxordelphi
So are you now saying that the OP's claim that minute increase in the eccentricity of the Moon's orbit is irrelevant to the claims that the Moon is not where it is supposed to be?
You've changed your opinion from this?
To me, of course, there are and have been easily observable changes in the moon from whatever viewpoints on earth I found myself in. The only difficulty has been in explaining those observations and so thanks OP because this brings a lot of information.
You now reject the "computer generated data" that is in the article? What brought about the change? Was it the realization that the paper in the OP does not actually support your own "empirical data"?
edit on 11/18/2011 by Phage because: (no reason given)
Originally posted by luxordelphi
The paper of the OP describes a situation wherein an error so small as to be almost wispy can be explained by an earth size body at 30au or a Jupiter size body at 200au. This is a startling revelation. That a number that small would require a body that big and that close to explain it. You don't find this fascinating beyond belief?
Originally posted by luxordelphi
My observational data (empirical) tells me that there's a lot more on the loose than that.
Originally posted by CherubBaby
reply to post by dcmb1409
Are you serious? I just got a reply too from Lorenzo too and he says."Ignore my other reply to dcmb1409 he is emotional and uneducated and I didn't know how to break the news to him/her "
So I am curious, which message is authentic? lol
Originally posted by CherubBaby
reply to post by dcmb1409
I was playing with you. Did you really email him? I'll email him altough I do need the addy. I say again, I was just kidding because I thought you were kidding when u said he emailed you.