A solar prominence erupted into space and seemed to create the Greek letter Pi as seen by NASA's Solar Dynamics Observatory, or SDO, on July 4, 2015. Pi is the symbol for the ratio of a circle's circumference. (Credit: NASA/Goddard/SDO #nasagoddard #sun #space #pi/ NASA Goddard Space Flight Center)
Share this photo
September 3, 2015 9:25 AM
NASA Goddard Space Flight Center's collection of stunning science and space scenes on Instagram, a mobile app that can be used to alter the color and tone of photographs.
Newsday.com now uses Facebook for our comment boards. Please read our guidelines and connect your Facebook account to comment.