NanoRacks DreamUp Xtronaut Crystal Growth (DreamXCG): The crew used hot water from the PWD to dissolve sugar crystals in two pouches and later transfer sugar water into the pouches with seeded dowels. This investigation teaches students about the effects of microgravity on crystal formations using near-identical flight kits flown and operated aboard the International Space Station (ISS). With access to crew member videos and data on the same experiment, students are able compare crystal formations in space to those in their classrooms. The investigation aims to promote science, technology, engineering, and math (STEM) fields to the next generation of students.

Combustion Integrated Rack (CIR) Configuration for Advanced Combustion via Microgravity Experiments (ACME): The crew removed and replaced CIR manifold #2 bottle on the front of the optics bench. CIR provides sustained, systematic microgravity combustion research and it houses hardware capable of performing combustion experiments to further research of combustion in microgravity. This is for the ACME investigation which is a set of five independent studies of gaseous flames to be conducted in the CIR. ACME’s primary goal is to improved fuel efficiency and reduced pollutant production in practical combustion on Earth. Its secondary goal is to improve spacecraft fire prevention through innovative research focused on materials flammability.

Extravehicular Mobility Unit (EMU) loop scrub and conductivity test: As part of the deconfiguration from the EVA activities over the past two weeks, the crew performed EMU water loop scrubs and then acquired and tested water samples for conductivity. These activities are required for long term health monitoring and maintenance of the EMUs.

Internal Thermal Control System (ITCS) Water Sampling: Today the crew continued to sample fluid from the ITCS for return and analysis on the ground. Today’s samples were taken from the US Lab module. This is regularly scheduled preventive maintenance to verify health of the ITCS.

Eye Exams: The crew completed routine Optical Coherence Tomography (OCT) and Fundoscope eye exams today. Eye exams are performed regularly onboard in order to monitor crewmembers eye health. Eyesight is one of the many aspects of the human body that is affected by long-duration stays in a microgravity environment.

Today’s Planned Activities

All activities are complete unless otherwise noted.



Cupola Window Shutter 4 Open

Ultrasound 2 HRF Rack 1 Power On

Health Maintenance System (HMS) Ultrasound 2 Scan

Extravehicular Mobility Unit (EMU) Cooling Loop Maintenance Scrub Initiation

Tropical Cyclone Hardware Closeout

Revised EVA Timeline Review

Health Maintenance System (HMS) Ultrasound 2 Scan performed by a Crew Medical Officer (CMO)

Photo/TV EVA GoPro Stow

Regenerative Environmental Control and Life Support System (RGN) Wastewater Storage Tank Assembly (WSTA) Fill

Glacier Desiccant Swap

Faulty AQM Sieve Cartridge Remove and Replace

Staging EVA equipment in DC1

Extravehicular Mobility Unit (EMU) Post Scrub Cooling Loop Water (H2O) Sample

Lab Internal Thermal Control System (ITCS) Sample Collection

Extravehicular Mobility Unit (EMU) Cooling Loop Maintenance Iodination

Health Maintenance System (HMS) Ultrasound 2 Post Exam

Environmental Health System (EHS) – Rad Detector Relocate

AstroPi PR video

Extravehicular Mobility Unit (EMU) Conductivity Test

TV Conference with the participants of the 12th S.P. Korolev Russian National Youth Readings

Microbial Tracking-2 Saliva Setup

Health Maintenance System (HMS) OCT Setup

Collecting PILLE dosimeter data and their deployment prior to RS EVA-44

Health Maintenance System (HMS) OCT Exam

EVA Extravehicular Mobility Unit (EMU) Cooling Loop Scrub Deconfiguration

Fuel Oxidizer Reaction Products (FORP) KIT Prep

Verification of ИП-1 Flow Sensor Position

Health Maintenance System (HMS) ISS Food Intake Tracker (ISS FIT)

Internal Thermal Control System (ITCS) Sample Stow

Orlan-MKS No.4 Drink Bag Refill and Install

Orlan-MK No.6 Drink Bag Refill and Install

Public Affairs Office (PAO) Event in High Definition (HD) – Lab

Regenerative Environmental Control and Life Support System (ECLSS) Recycle Tank Fill Part 3

In Flight Maintenance (IFM) Waste and Hygiene Compartment (WHC) Full Fill

Purging Elektron-VM Liquid Unit (БЖ) after Shutdown

СОЖ maintenance

NanoRacks Rock Candy Experiment Start

Vacuum cleaning of КВД and КСД valve screens before EVA

Combustion Integrated Rack Upper Rack Doors Open

Stow Syringes used in H2O Conductivity Test

Combustion Integrated Rack Manifold #2 Bottle Replacement

Extravehicular Mobility Unit (EMU) Swap

Health Maintenance System (HMS) Fundoscope Setup

MELFI 3 Ice Brick Insert 2

Combustion Integrated Rack Upper Rack Doors Close

Health Maintenance System (HMS) Fundoscope Prep

Health Maintenance System (HMS) Eye Exam – Fundoscope

Flight Director/ISS CREW CONFERENCE

Inventory Management System (IMS) Conference

Completed Task List Activities

None

Ground Activities

All activities are complete unless otherwise noted.



Standard commanding.

Three-Day Look Ahead:

Friday, 02/02: JPM rack swap, Russian EVA

Saturday, 02/03: Housekeeping, crew off duty

Sunday, 02/04: Off duty

QUICK ISS Status – Environmental Control Group: