The Expedition 61 crew is starting the workweek in between spacewalks and running a variety advanced space investigations. A set of small satellites is also being readied for deployment outside the International Space Station by midweek.

NASA Flight Engineer Andrew Morgan and ESA (European Space Agency) Commander Luca Parmitano are gearing up for another spacewalk set to begin on Friday at 7:05 a.m. EST. Astronauts Jessica Meir and Christina Koch spent an hour reviewing robotics procedures for Friday’s spacewalk. Meir then joined Parmitano and Morgan in the afternoon to study details supporting the second Alpha Magnetic Spectrometer repair spacewalk.

Morgan started his day setting up small satellites inside a deployer that will be ejected outside Japan’s Kibo laboratory module on Wednesday morning. Parmitano practiced robotic rover technology that future space crews could use to explore a planetary surface before landing humans.

Koch tested the operation of a 3D bioprinter today without using actual cells for its potential to manufacture complex human organ tissue shapes in space. She also fed lab mice being monitored for therapeutic insights into Earth-bound ailments.

Cosmonauts Alexander Skvortsov and Oleg Skripochka collaborated Monday and researched how the human digestion system is impacted by microgravity. The duo then reviewed Soyuz MS-15 crew ship systems before working on a variety of life support maintenance.