Today marks the start of another Earth orbit around the sun, but there’s also something called the galactic year, and that one just keeps going and going and going. Plus: today in 1959, Johnny Cash played a concert for inmates at San Quentin Prison, including one who would make his own mark on country music history.
How long is a galactic year? (Live Science)
On This Day: Johnny Cash Performed for an Imprisoned Merle Haggard at San Quentin (American Songwriter)