OsteoOmics: The crew changed BioCell media in BioCell Habitat 4. The media in all four of the habitats are changed in this second of four weeks of OsteoOmics operations. Crewmembers experience bone loss in orbit, stemming from the lack of gravity acting on their bones. OsteoOmics investigates the molecular mechanisms that dictate this bone loss by examining osteoblasts, which form bone, and osteoclasts, which dissolve bone. Improved understanding of these mechanisms could lead to more effective countermeasures to prevent bone loss during space missions and in a wide range of disorders on Earth. This may lead to better preventative care or therapeutic treatments for people suffering bone loss as a result of bone diseases like osteopenia and osteoporosis, or for patients on prolonged bed rest.

Fine Motor Skills (FMS): The crew completed a series of interactive tasks during a FMS session today. The FMS investigation studies how the fine motor skills are effected by long-term microgravity exposure, different phases of microgravity adaptation, and sensorimotor recovery after returning to Earth gravity. The goal of the investigation is to determine how fine motor performance in microgravity trends/varies over the duration of a six-month and year-long space mission; how fine motor performance on orbit compare with that of a closely matched participant on Earth; and how performance trends/varies before and after gravitational transitions, including periods of early flight adaptation and very early/near immediate post-flight periods.

Extravehicular Activity (EVA) Preparations: In preparation for tomorrow’s planned EXPRESS Pallet Controller Assembly (ExPCA) EVA, the crew verified tools are configured properly and that batteries are installed in Pistol Grip Tools and cameras. They also performed a final procedures review and conference with ground teams followed by final Equipment Lock preparation. Egress is scheduled tomorrow at 7:10AM CDT.

Today’s Planned Activities

All activities were completed unless otherwise noted.

MARES battery discharge process initiation

Personal Data Prep for Return

ISS Food Intake Tracker – Screenshot Captures

IMS Delta file prep

URAGAN. Observation and photography

EKON-M. Observations and photography

OsteoOmics MELFI Removal

Health Maintenance System (HMS) Periodic Health Status (PHS) Pre EVA Examination

Filling (separation) of ЕДВ (КОВ) for Elektron or ЕДВ-СВ

Fine Motor Skills Experiment Test – Subject

MARES knee configuration deinstallation

Health Maintenance System (HMS) Pre-EVA Periodic Health Status Examination – Stow

S/G2 MRM2 Comm Config

Equipment gathering for Orlan-ISS No.5 Ops

Combustion Integrated Rack Alignment Guide Install

Environmental Health System (EHS) Acoustic Dosimeters – Data Transfer and Stow

Orlan-ISS No.5 Elements Deinstallation

ExPress Carrier Avionics Configuration

Extravehicular Activity (EVA) Tool Configuring

MARES battery discharge status control

Comm reconfig for nominal ops

Extravehicular Activity (EVA) iPad Contingency Procedures preparation

OsteoOmics MELFI/MERLIN Transfer

Nikon still camera sync with station time

Download Pille Dosimeter Readings

Extravehicular Activity (EVA) Tool Audit

SARCOLAB. MARES files transfer verification and shutdown

OsteoOmics Media Relocate

Pille Sensor prep for USOS EVA

Extravehicular Activity (EVA) Procedure Review

SARCOLAB. PEMS and EMG final stowage

SARCOLAB. EPM Laptop relocation for files downlink preparation

MSPR GCM Component Deactivation [Deferred]

OsteoOmics Media Change

Recharging Soyuz 733 Samsung PC Battery (if charge level is below 80%)

MARES disconnection and stowage

Казбек Fit Check

Robotic Workstation (RWS) Setup

PILOT-T. Preparation for the experiment

Health Maintenance System (HMS) Food Frequency Questionnaire (FFQ) or ISS Food Intake Tracker (ISS FIT)

SSC DOUG Setup for EVA

MARES stowage assistance

PILOT-T. Experiment Ops

KASKAD. Manual mixing

RWS Video Checkout

Extravehicular Activity (EVA) Procedure Conference

PILOT-Т. Closeout

Evening Preparation Work

Equipment Lock (E-LK) Preparation

LAB BelAir Wireless Access Point (WAP) Verification

MARES-EPM Hard Disk removal and stowage

Cabin restow after MARES

Closure of SM window shutters 6, 8, 9, 12, 13, 14

Completed Task List Items

Veg03 Plant Water/Photo

Ground Activities

All activities were completed unless otherwise noted.

EVA procedures conference

MSS power up

Three-Day Look Ahead:

Friday, 05/12: ExPCA EVA #42

Saturday, 05/13: Water dispensing for Electrowetting Drawer, Skinsuit height measurement, EVA camera disassembly/Airlock deconfig/debrief

Sunday, 05/14: Crew off duty, Fluid Shifts hardware gather, Ultrasound setup in Russian Segment

QUICK ISS Status – Environmental Control Group: