Exposing PseudoAstronomy

February 4, 2009

Planet X and 2012: What The Sky Looks Like On December 21, 2012


Introduction

Continuing my series on Planet X and 2012, I already addressed the claim that the sun will be aligning with the galactic center on December 21, 2012 (the winter solstice). However, it occurs to me that I made some vague remarks of this galactic alignment not actually being any alignment what-so-ever, despite people saying it is, without actually going into the details of the situation. I wanted to clarify this with a diagram that, in fact, there is no alignment on December 21, 2012, with even the central plane of the galaxy, let alone the center of the galaxy.

What The Sky Looks Like

The Sky on December 21, 2012 (Click to Enlarge)

The Sky on December 21, 2012 (Click to Enlarge)

The above picture (click to enlarge it) shows what the sky looks like on the winter solstice on December 21, 2012 at 11:12 AM GMT (note that the time often quoted is 11:11, but that is not the case). In this section, I’m going to explain what is shown, while in the next section I’ll explain what it means.

The bright white object on the left side that intersects the green line is the sun.

The green line is the line of the ecliptic, which is the line traced out by the sun in the sky. Alternatively, it is the plane of Earth’s orbit through the solar system.

The red grid is the celestial coordinate system, which I briefly alluded to in the previous post. It is really an extension of Earth’s latitude and longitude system projected into space. Declination is the equivalent of latitude, while Right Ascension is longitude. Unlike longitude, which is measured in degrees (360°), right ascension is measured in hours (24 h in the sky). This is because it takes one hour for an object to move one hour of right ascension.

The purple grid is the galactic coordinate system. The horizontal lines are lines of galactic latitude, where the galactic equator (running through the middle) is really the, well, galactic equator – the plane of the galaxy. The vertical lines are the lines of galactic longitude, with the galactic meridian going through the center. Where the galactic meridian and the galactic equator intersect is defined as the center of the galaxy.

The definition of the winter solstice is when the sun is on the 18th hour line of right ascension. That occurs – in 2012 – at 11:12 AM GMT. (Summer solstice is when it is on the 6th hour of right ascension. Spring equinox is when it’s on the 0th hour line while autumnal is when it’s on the 12th hour line. By definition, it is always on the ecliptic.)

What Do We See from This Diagram?

No galactic alignment.

First off, the sun isn’t anywhere near the galactic center. So strike that one right off the list.

Second, the sun isn’t even on the galactic equator. It is 10.86 arcmin (0.181°) away from it. Though in the interest of full disclosure, the sun’s limb will be on it since the sun does have a finite size in the sky.

But, the closest approach to when the 18th hour of right ascension intersected with the galactic equator intersected with the ecliptic was the winter solstice of 1:50 AM December 22, 1998. The sun was only 0.30 arcmin (0.005°) off of the galactic equator. Funny … I don’t remember any doomsday happening then. Granted, I was in high school and not paying much attention to the news at the time, but I think I would have noticed if the world had ended.

Final Thoughts

As you can clearly see, there is no galactic alignment on this date. It already happened. And nothing happened. And in reality, the winter solstice has absolutely no relative importance in astronomy, just like alignments have no importance in astronomy (in the context of affecting Earth in a doomsday-like scenario). So, even if there were going to be an alignment – which there isn’t – it would have no importance anyway. It would happen every year. In fact, the sun crosses the plane of the galaxy twice every year … and yet nothing happens.

I know I’ve berated this claim many times now, but it’s important. I still see people making the claim. Please take note: It is baseless! And even if it weren’t, it wouldn’t matter anyway.

All Posts in This Series

The main blog posts:

I have also written a few posts that are tangentially related to the 2012 subject:

And my podcast episodes so far on 2012 and Planet X:

And podcasts on which I have been interviewed on 2012:

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