Richard Robert "Ricky" Arnold II (born November 26, 1963, in Cheverly, Maryland) is an American educator and a NASA astronaut.

During his tenure, he completed a Masters program while conducting research in biostratigraphy at the Horn Point Environmental Laboratory in Cambridge, Maryland.

Upon matriculation, Arnold spent another year working in the Marine Sciences including time at the Cape Cod National Seashore and aboard a sail training/oceanographic vessel headquartered in Woods Hole, Massachusetts.

During that time, he began presenting workshops at various international education conferences focusing on science teaching methodologies.

Arnold was the guest of honor at the Bowie High School Class of 2009 graduation, delivering the commencement speech.

[3] In 2016 Arnold participated in ESA CAVES[4] training in Sardinia (Italy) spending six nights underground simulating a mission exploring another planet.

Arnold performed his second EVA on March 23, 2009, with Joseph Acaba with a duration of 6 hours 27 minutes, to move one of the station's two Crew and Equipment and Translation Aid - or CETA - carts.

This article incorporates public domain material from websites or documents of the National Aeronautics and Space Administration.