"I've come to appreciate the planet we live on. It's a small ball in a large universe. It's a very fragile ball but also very beautiful. You don't recognize that until you see it from a little farther off." — Guion Bluford: @nasa astronaut, US Air Force pilot, and the first African-American to fly into space, born #OTD. 🌎🚀 . . . . . . . . . . #nasa #science #planet #earth #beauty #blackhistory #blacklives #usairforce @usairforce #astronaut #space #sciencehistory #sciencehero #spacescience #thanks #universe #thankyou #ispriationalquote #quotation #inspiration #birthday #happybirthday #onthisday