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Originally posted by TheComte
Could it be because it's turning into Winter?
Does the moon's position change as the seasons change?
Originally posted by warpcrafter
Lots of people have been noticing this over the last couple of years, and by the number of hardcore shillbots that will come and loudly proclaim how terrible a person you are for mentioning it, there must surely be something to it. Surely, Phage will be over shortly to tell you how stupid you are. Ignore him, I'm sure lots of people on ATS do.
What this means is that the time variation in eccentricity (the "ovalness" of the Moon's orbit), de/dt, was measured to be 9 parts PER TRILLION (10^[-12]) per year, with a measurement error of about 30 % (ie 9 +/- 3). This is a VERY SMALL AMOUNT, 9 parts per trillion.
I'll illustrate with an example. Given that the distance between New York and Los Angeles is about 4 thousand kilometers (2500 miles), a proportion of 9 parts per trillion corresponds to a distance of 36 micrometers, or roughtly a one tenth of the width of a human hair...
For the Moon, its AVERAGE distance to Earth is 380 thousand kilometers, so we're talking about measuring variations in distance to the Earth of the order of 380E6 * 9E-12 = 3 milimeters per year. That's about 1/8 of an inch per year...
Given that the data used for the measurement was for about 38 years, this amounts to an average variation in the "ovalness" of the orbit of about 38 * 1/8 = about 5 inches over 38 years. That's 5 inches in about 220 thousand MILES, or about 14 BILLION inches, over the course of 38 years.
Originally posted by LeoVirgo
ane also, the people that try to explain these things, are not the types that call people stupid or belittle them...most of the time they are kind and are willing to take the time to show someone how something they thought was 'wrong' ws not wrong at all...
Originally posted by Vamp333
there are a few threads like this going around at present.. i even made one a few weeks ago about my 10yo son continuously telling me that the moon is up-side-down + in the wrong place.
Moon Up-Side-Down ????
Originally posted by LeoVirgo
Originally posted by Vamp333
there are a few threads like this going around at present.. i even made one a few weeks ago about my 10yo son continuously telling me that the moon is up-side-down + in the wrong place.
Moon Up-Side-Down ????
i hope someone ws able to explain things to you so you could teach your son about this...and even ways he can look for it in the future.
your son would love stellarium...you can download it and also look up something called starry night sky education...there is a widget they have that will show you where everything is in the night sky and you can observe the suns positions to the moon so you can predict when the moon will have a bottom crescent or even in the early morning hours sometimes will seem to be a top crescent..where the moon looks like a frown.
when you see the smiling crescent..then know that the sun sits below the moon-shining upward to it, making it look like to us, the moon is a u shape. when the sun sits a bit to the side of the moon, that is when the crescent looks like the backwards c to us. the moon does not follow the suns elliptical path perfectly...it varies from the suns path a few degrees...which can cause the moon to look different to us from our perspective here on erth.
I think that every several years...the moons positions to the earth causes the smiling crescent for more months then usual for a few years in a row...then it goes back to only being a couple months out of the year that we will see the smiling crescent.
Originally posted by Mizzijr
I've been watching the skies often. I see the Sun rise and fall in a different place than it once was.. I keep thinking that maybe it's because of where we are in revolutionary orbit, the Sun seems like it's rising in a different spot, but really we are just gradually looking from a different angle now. That's what I'm subconsciously thinking, but maybe I am wrong.
Another problem, linked to the one investigated here, which has recently received attention is the observationally determined secular variation of the Astronomical Unit [2, 3, 4, 5]. Moreover, increasing accuracy in astrometry pointing towards microarcsecond level [6], and long-term stability in clocks [7] require to consider the possibility that smaller and subtler perturbations will be soon detectable in the solar system. Also future planetary ephemerides should take into account ˙M /M. Other phenomena which may show connections with the problem treated here are the secular decrease of the semimajor axes of the LAGEOS satellites, amounting to 1.1 mm d−1, [8] and the increase of the lunar orbit’s eccentricity [9].
Originally posted by warpcrafter
Lots of people have been noticing this over the last couple of years, and by the number of hardcore shillbots that will come and loudly proclaim how terrible a person you are for mentioning it, there must surely be something to it. Surely, Phage will be over shortly to tell you how stupid you are. Ignore him, I'm sure lots of people on ATS do.