Vision tests and a variety of advanced biology research activities took place aboard the International Space Station today. The Expedition 62 crew also serviced several computers and life support gear as a new crew gets ready for launch next month.

Each crewmember had a vision acuity test today, with NASA astronaut Andrew Morgan starting first just after lunchtime today. The crew set up a laptop computer with a vision chart and read the characters with one hand over each eye as ground doctors monitored in real-time.

Morgan started his morning tending to mice living in the Japanese Kibo laboratory module. The rodents are being observed to understand how microgravity affects genetic expression. Results could inform how humans will adapt to longer missions to the Moon, Mars and beyond.

In the afternoon, Morgan explored how the space environment, including radiation, impacts microbes living in the human body. The study seeks to understand how gut bacteria is enriched or depleted in space and how it affects astronaut health.

Watch how NASA is learning to protect an astronaut’s microbiome… https://www.youtube.com/watch?v=qOZFfUyOw8s

NASA Flight Engineer Jessica Meir activated a 3-D bioprinter that is being tested for its ability to manufacture human organs in space. She tested the device without printing any cells today and checked its cleaning syringes. The station’s Bio-Fabrication Facility could help patients on Earth and enable future crews to produce food and medicines on long-term space missions.

In the Russian segment, station Commander Oleg Skripochka worked an experiment during the morning to help researchers understand the ergonomic conditions aboard the orbiting lab. The veteran cosmonaut then moved onto computer upgrades before collecting radiation readings in the afternoon.

The next crew to live and work on the space station is preparing to depart to its launch site at the Baikonur Cosmodrome in Kazakhstan. NASA astronaut Chris Cassidy and Roscosmos cosmonaut Ivan Vagner will sit next to Soyuz Commander Anatoly Ivanishin when they launch April 9 aboard the Soyuz MS-16 crew craft for the six-hour ride to their new home in space.