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October 14, 2008

Sacre Bleu!!!

See the night sky on the day you were born.


Unbeknownst to the ancient astrologers, the Earth continually wobbles around its axis in a 25,800-year cycle. This wobble—called precession—is caused by the gravitational attraction of the Moon on Earth's equatorial bulge.

Over the past two-and-a-half millennia, this wobble has caused the intersection point between the celestial equator and the ecliptic to move west along the ecliptic by 36 degrees, or almost exactly one-tenth of the way around. This means that the signs have slipped one-tenth—or almost one whole month—of the way around the sky to the west, relative to the stars beyond.

For instance, those born between March 21 and April 19 consider themselves to be Aries. Today, the Sun is no longer within the constellation of Aries during much of that period. From March 11 to April 18, the Sun is actually in the constellation of Pisces!

What does this mean?

The table below lists the dates when the Sun is actually within the astronomical constellations of the Zodiac, according to modern constellation boundaries and corrected for precession (these dates can vary a day from year to year).

You will most likely find that once precession is taken into account, your zodiac sign is different.

Nancy Reagan must be having a fit.

Posted by Cassandra at October 14, 2008 07:43 AM

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We didn't *have* nights when I was born. They hadn't invented dark yet...

Posted by: BillT at October 14, 2008 10:23 AM

It means Apolcaypse Now. Or APocalypse Troll.

Posted by: Ymarsakar at October 14, 2008 03:07 PM

When you troll for Apocalypse, do you chum or use baited hooks?

Posted by: BillT at October 14, 2008 03:23 PM

"When you troll for Apocalypse, do you chum or use baited hooks?"

I usually cover all angles and bait my hooks with a chum.

Posted by: DL Sly at October 14, 2008 03:51 PM

I usually cover all angles and bait my hooks with a chum.

Murtha right? Great bang for your buck, dollar per pound, there.

When you troll for Apocalypse, do you chum or use baited hooks?

First you need the power of the moonbat before you can chum. To make the chum go upwards to the moon and sun, you need the propulsion power of the moonbat. That can be hard to get, though. So as an alternative, it is far easier to use baited hooks. That way the moonbats will take the bait and you don't need to do much of anything except buy bait. If you buy bait, you get chum anyways. If you try to get chum, you still have to get it airborne.

Posted by: Ymarsakar at October 14, 2008 04:42 PM

What this also means is that Polaris was not always the North Star and will not be in the future. The celestial extension of the earth's axis will make it's closest approach to Polaris in 2012, but after that it will drift away. In 14,000 years Vega (the brightest star in the constellation Lyra) will be the North star. 4700 years ago it was Thuban in Draco, upon which (and not Polaris) the pyramids are aligned.

Think of what you see when a top spins, and the axis wobbles as it slows down. In our case I'm not sure of what causes it. Perhaps it's the effect of the Earth's molten iron/nickel core spinning on it's own axis. Maybe it's a legacy from whatever hit us to break the Moon off. But that's how it works. We wobble.

Posted by: RonF at October 14, 2008 04:58 PM

The wobble is from the Founding Fathers spinning in their graves...

Posted by: BillT at October 14, 2008 05:02 PM

LOL, BillT ;-)

Posted by: Miss Ladybug at October 14, 2008 07:49 PM

"What does this mean?"

Ummm...Climate Change™? ;-)

Posted by: camojack at October 15, 2008 01:32 AM

Heh, I knew about this several decades ago.

Just one more sign that natal horological astrology* is pure bunkum.

*(the precise term for it)

Posted by: Obloodyhell at October 15, 2008 08:26 AM