Dwtw
I think the two stars/septagrams are two different ways of marking the polar axis. IMO, the large globe on the Star card is the Earth. This identification provides the card with a new name, as per Liber AL I:57.
My thesis is much too long to post here, but can be read on scribd if you like:
http://www.scribd.com/doc/235644104/The-Tree-of-Return-in-the-Light-of-Liber-AL-I-57
In a nutshell, the idea is that verse I:57 indicates certain paths on the Tree of Life, namely the three horizontal ones of Dalet-Tet-Peh, (which coincidentally indicate the Three Grades of Thelemites). When these three paths are activated on the Tree of Return from the Lurianic Kabbalah, they point to a symmetry that involves the paths of Yod/The Hermit, and Kaf/the Wheel. In turn, the symbolism of Tzaddi/The Star is implicated.
The Star of trump XVII is, in one sense, the pole star, the fixed axis of the heavens. But when Hipparchus discovered the precession of the Equinoxes, that meant that the pole star was not fixed. In fact there is no pole star. The pole is the axis of the Earth itself. So the name of the card is changed from the Star to the Earth. This makes the three bottom paths on the Tree of Return attributed to the cards of The Moon, the Sun, and the Earth.
It is not the celestial globes that rotate around the Earth; it is the Earth that spins through the heavens. The axle of this wheel, the Hadit point, is the center of the Earth, and the North and South Poles are the poles of spin. Note that the letter-name Tzaddi means 'fish-hook', and this hook is seen on the Universe card, hanging from the radiating eye of the Cosmos, acting as an anchor point, like the imaginary pole star. Also cf. the Book of Lies cap. 28, symbolizing the 28th path of the ToL, i.e., Tzaddi.
There is a third septagram inside the upper bowl that the virgin pours over herself. This indicates that the flow from the top to the bottom bowl is also a type of axis, around which the forces spin. And while this one and the other one on the globe are true polygons, the one in the 'sky' seems to be more of a polyhedron, which appears from a certain perspective to show the outline of the 'star of Babalon'. It actually has the other septagram drawn inside it, and the combination of both types gives it more of a three-dimensional appearance.
As an aside, Crowley noted that if one draws a heptagon and marks the seven points with the planets in the Chaldean order, then drawing along every 4th point with a septagram gives the days of the week. He does not mention that the other possible septagram, (using every third point, i.e., the Star of Babalon) indicates the order of the planets based on the atomic number of their alchemical metals: Iron-Copper-Silver-Tin-Gold-Mercury-Lead, or 26-29-47-50-79-80-82.
The total of these atomic numbers is 393, which has an interesting gematria resonance in Trigrammaton qabalah:
393 = Every man and every woman is a star.
Litlluw
RLG