WHAT DOES THE SKY MAP SHOW?
The sky map above (based on a viewer located at 30 degrees North latitude) shows the stars of the heavens, including the major stellar constellations, the celestial equator, the ecliptic (this is the path of the Sun), the constellations on that path (the modern Zodiac), and the line of the equinoxes in 3000 BC at the position this line occupied 5000 years ago. For comparison, the line of the equinoxes for 2002 AD is also drawn. This line has moved due to precession, explained further below. WHAT USE DOES THE SKY MAP HAVE? Much of the material presented on Megaliths.net can be understood properly only if the user has access to a good historical sky map (planisphere) or to an astronomy software program which is capable of calculating the positions of the Moon, Sun, Stars and Planets backwards into prehistoric eras. Since not everyone has such sources at hand, the sky map pictured above provides essential basic information, until a good historical planisphere or a good astronomy software
