The world's oldest solar calendar may have been unearthed in Turkey
At first glance, the V-shaped symbols carved onto the pillars at Gobekli Tepe — an archaeological site in southern Turkey — don’t look like much compared to the adjacent animal shapes depicting the cycles of the sun and the moon.But according to researchers, the markings could be evidence of two big findings: The ancient pillar could be the world’s oldest lunisolar calendar, and it may serve as a memorial to a comet strike that hit Earth roughly 13,000 years ago and triggered a mini ice age.