[FPSPACE] Ten ancient observatories as viewed from space

[LARRY KLAES]

Today, cutting-edge astronomers use space-based observatories to gain a 
sharp view of the stars and advance our understanding of the cosmos. But 
appreciation for celestial bodies dates back to ancient times. Many cultures 
built structures in ways that suggest they were in tune with Earth's annual 
trek around the sun. Other structures appear to take constellations and 
planets into account.

Click the "Next" arrow to learn about 10 of these ancient observatories. 
Each page includes an image taken by GeoEye's Ikonos satellite, shown in 
this artist’s conception, as it flew 423 miles above Earth at an average 
speed of 17,000 miles per hour.

Full article and images here:

http://www.msnbc.msn.com/id/26303648?pg=1#Tech_WeirdScience_AncientObservatories