I have old science books that state our universe is 70,000,000 years old...
They must be old books in truth. Just our earth has been known to be older than that for about a century.
....but based on current data it is approx. 20,000,000,000 years old.
Not very current data. At least two separate lines of data lead to around 13.7 billion years - and that's been published for 10+ years now.
"The wretched world lies now under the tyranny of foolishness; things are believed by Christians of such absurdity as no one ever could aforetime induce the heathen to believe." - Agobard of Lyons,
ca. 830 AD