NASA Astronaut Ricky Arnold@astro_ricky

Astronaut (STS-119, Expedition 55/56, NEEMO 13, #CAVES2016) & Educator. Currently onboard the @ISS for Expeditions 55 and 56. Posts are my own.

Across thousands of years and miles of empty space, the moon’s gentle tether to the human heart endures. #NationalMoonDay #Apollo11Landing


The stuff of fantasy as a #Dragon journeys down the spine of #Italy, across #Greece, and alongside the #RedSea en route to @iss before being gently captured by humans flying the #Canadarm2


Motivation = Ice Cream as we open the @spacex Dragon hatch & begin to unpack. #ThrowBackThursday


"The city seen from the #QueensboroBridge is always the city seen for the first time, in its first wild promise of all the mystery and beauty in the world.” - F. Scott Fitzgerald #NYC #Manhattan #NewYork


‪The ethereal beauty of Earth is our constant companion. It reminds us of all that we have left behind and what awaits when we return. The Skeleton Coast of the Namib Desert. #Namibia


Salar de Uyuni – the magnificent salt flats of #Bolivia where towering thunderstorms go to die, thus forming the Atacama desert of #Chile


‪The violent beauty of our dynamic Earth revealed by a volcanic plume alongside Lake Atitlán in #Guatemala.‬


A stunning daytime traverse from #SanFrancisco southward through the Americas.


The heart of #Madagascar drains into the sea due to decimation of rainforests & coastal mangroves. #BetsibokaEstuary


Visitors from deep space have visited Earth before and will again. Impact craters in #Quebec #Namibia #Arizona


Recently a student asked me “how long would it take to get to the moon?” This @nasa activity uses balloons to understand the relative sizes of Earth, Earth’s Moon and Mars, and their relative distance to each other. #TeacherOnBoard


…throw off the bowlines. Sail away from safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover…” -Mark Twain