Since this seems to be the only science article today, I will post this little item here. It may relate to what the Romans called the Great Year,which is about 24,000 years and is when the zodiac completes a revolution.
Evidence Mounts For Companion Star To Our Sun
Whoa. Who knew?
Likewise, the Mayan calendar which ends it's "Age" in 2012 and begins a new calendar cycle..
It also appears to have a cycle of 25,000 years or so..
( I have read cycles ranging from 24K to 26K, and do not know what is considered the "accurate" calculation.. )
At any rate, the cycle is recognized by more than one culture..