Washington, Shawwal 22, 1435, Aug 18, 2014, SPA -- Two International Space Station astronauts conducted a spacewalk Monday to set loose a tiny Peruvian research satellite, install fresh science experiments, and retrieve old ones. Russians Alexander Skvortsov and Oleg Artemiev conducted the walk. The nanosatellite – named Chasqui after the Inca messengers who were fleet of foot – holds cameras that will aim at Earth. It is a technological learning experience for the National University of Engineering in Lima. Meanwhile, American spacewalks remain on hold. The National Aeronautics and Space Administration (NASA) hoped to resume spacewalks this month after a yearlong investigation but delayed the activity until fall to get fresh spacesuit batteries on board. The SpaceX company will deliver the batteries on a Dragon supply ship next month. --SPA 23:45 LOCAL TIME 20:45 GMT www.spa.gov.sa/w