Add Yahoo as a preferred source to see more of our stories on Google. The Antikythera Mechanism, sometimes described as the world's oldest computer, on display at the Archaeological Museum in Athens.

Archaeologists have unearthed what they believe to be the world's oldest calendar, dating back an astonishing 12,000 years, at the ancient settlement of Gobekli Tepe in modern-day Turkey. The site, ...

The Antikythera mechanism — an ancient shoebox-sized device that was used to track the motions of the sun, moon and planets — followed the Greek lunar calendar, not the solar one used by the Egyptians ...

Stonehenge may have served as a calendar to keep track of the yearly movements of the sun, suggesting a prehistoric link to sun worship in the eastern Mediterranean, according to new research.

New analysis has identified how the design of Stonehenge may have represented a calendar, helping people track a solar year of 365.25 days calibrated by the alignment of the solstices. Although it had ...

Stonehenge may have served as a calendar to keep track of the yearly movements of the sun, suggesting a prehistoric link to sun worship in the eastern Mediterranean, according to new research. A study ...

It had long been thought that the famous site of Stonehenge served as an ancient calendar, given its alignment with the solstices. Now, research has identified how it may have worked. New finds about ...

Stonehenge has always been shrouded in mystery. The ancient monument and burial site in southern England has been around for more than 5,000 years — but its purpose isn’t completely clear. Researchers ...