Happy Pi Day! Today, NASA released this awesome photo of a NASA-themed pie with NASA's Pleiades supercomputer at Moffett Field, near Mountain View, California. Fun fact: in 2011, researchers calculated the sixty-trillionth binary digit of Pi-squared. The work behind the calculation was based on a mathematical formula discovered more than a decade ago by David H. Bailey, the Energy Department's Chief Technologist of the Computational Research Department at Berkeley National Lab. Learn more about their calculations here. Photo courtesy of NASA.