NASA Johnson:
Expedition 56 Flight Engineer Ricky Arnold of NASA
NASA Johnson:
NASA Astronaut Ricky Arnold performs microscope photo document operations
NASA Johnson:
NASA astronaut Ricky Arnold works on an experiment that extracts RNA from biological samples
NASA Johnson:
The Expedition 56 crew members pose for a fun portrait in the International Space Station's Harmony module
NASA Johnson:
NASA astronaut Ricky Arnold
NASA Johnson:
Expedition 56 Flight Engineer Ricky Arnold inspects U.S. spacesuits and tethers
NASA Johnson:
Expedition 56 Flight Engineer Ricky Arnold works with a student-designed experiment
NASA Johnson:
Expedition 56 Flight Engineer Ricky Arnold prepares amplified DNA
NASA Johnson:
NASA astronaut Ricky Arnold processes microbial DNA
NASA Johnson:
NASA Astronaut Ricky Arnold works with the Bone Densitometer
NASA Johnson:
NASA astronaut Ricky Arnold calibrates the Bone Densitometer
NASA Johnson:
NASA astronaut Ricky Arnold
NASA Johnson:
NASA astronaut Ricky Arnold
NASA Johnson:
NASA astronaut Ricky Arnold
NASA Johnson:
Flight Engineer Ricky Arnold works with Genes in Space-5
NASA Johnson:
NASA astronaut and Expedition 55 Flight Engineer Ricky Arnold
NASA Johnson:
Expedition 55 crew member Ricky Arnold
NASA Johnson:
NASA astronaut and Expedition 55-56 Flight Engineer Ricky Arnold
NASA Johnson:
jsc2014e005966
NASA Johnson:
jsc2007e041597
NASA Johnson:
jsc2007e041608
NASA Johnson:
jsc2007e041612
NASA Johnson:
jsc2007e041639
NASA Johnson:
jsc2007e041641
NASA Johnson:
jsc2007e041652
NASA Johnson:
jsc2007e041859
NASA Johnson:
jsc2007e042251
NASA Johnson:
jsc2007e042273
NASA Johnson:
jsc2007e043017
NASA Johnson:
jsc2007e043030
