OA-8 Cygnus Release: After yesterday’s unberth and the overnight GPS shadowing (“Photobomb”) Detailed Test Objective (DTO), today SSRMS ground controllers relocated the Cygnus vehicle to the release point and the onboard crew released the vehicle and monitored its departure. Cygnus will be held in that position overnight and then repositioned for release tomorrow. Cygnus arrived at the ISS on the 14th of November carrying supplies, and is now departing with hardware and trash for disposal.

Combustion Integration Rack (CIR) Ignitor Tip R&R: Today the crew removed and replaced the Multi-user Droplet Combustion Apparatus (MDCA) ignitor tip inside CIR. The tip burned out last week during Advanced Combustion Microgravity Experiment (ACME) operations, and science operations have been on hold pending this hardware R&R. The ACME project is a set of five independent studies of gaseous flames to be conducted in the CIR. ACME’s primary and secondary goals are (1) improved fuel efficiency and reduced pollutant production in practical combustion on Earth, and (2) spacecraft fire prevention through innovative research focused on materials flammability.

Lighting Effects: Today a 52S crewmember began a two-week long Sleep Shifted session, by logging into the sleep log application and tracking his daily sleep patterns and wakefulness. The Lighting Effects investigation studies the impact of the change from fluorescent light bulbs to solid-state light-emitting diodes (LEDs) with adjustable intensity and color and aims to determine if the new lights can improve crew circadian rhythms, sleep, and cognitive performance.

Earth Imagery from ISS Target Operations: Using the NIKON camera the crew captured time-lapse images of the United Kingdom and the Nile at night. The Earth Imagery from ISS investigation creates a series of videos, showcasing Earth from space. These videos will be taken with cameras on the International Space Station in 6K hi-resolution, then integrated into videos for screensavers for public enjoyment, exploration, and engagement.

Environmental Health System (EHS) Total Organic Carbon Analyzer (TOCA) Water Recovery System (WRS) Sample Analysis: This morning, the crew analyzed water quality on board using the EHS TOCA system, looking for contaminants in the water.

EHS Microbial Capture Device (MCD) and Coliform Water Sample Analysis: Today, the crew analyzed water samples which were taken on Monday. This analysis procedure is designed to detect microbial growth in the ISS water system.

Extravehicular Mobility Unit (EMU) Helmet Swap: Today the crew removed an EMU helmet which has passed its certified lifetime and replace it with a newly launched helmet. The old helmet will be returned to the ground on SpaceX-13 for refurbishment.

Today’s Planned Activities

All activities are complete unless otherwise noted.



Lighting Effects Sleep Log Entry – Subject

MORZE. Evaluation using SPRUT-2.

MORZE. Psycho-physiological Evaluation: Tsentrovka, SENSOR Tests

Crew Departure Preparations for Return to Earth

Robotic Workstation (RWS) High Definition (HD) Monitor Downlink

USOS Window Shutter Close

ARED Software Big Picture Words review

In Flight Maintenance (IFM) Crew Quarters (CQ) Deck Cleaning

Verification of ИП-1 Flow Sensor Position

JEM Camera Robot S/N 002 Preparation

UDOD. Experiment Ops with DYKNANIYE-1 and SPRUT-2 Sets. Tagup with specialists

Cygnus PCS Command and PROX Link Verification

JEM Mesh Cover-Return Grille Cleaning

Monitoring closure of shutters on SM windows 6, 8, 9, 12, 13, 14. See Note 5

MORZE. Psycho-physiological Evaluation: SUPOS Test

Dragon Prepack

Environmental Health System (EHS) Total Organic Carbon Analyzer (TOCA) Water Recovery System (WRS) Sample Analysis

Reconfigure Galley Rack at NOD1S4 Location

MORZE. Closeout Ops

EXPANDER Exercise

SPHERES Battery Setup

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

СОЖ Maintenance

Miniature Exercise Device Equipment Stow

Microscope Hardware Setup

Photo/TV Ghost Camera in Cuopla on SSC power recording

Space Station Remote Manipulator System (SSRMS) Cygnus Release

Preventive Maintenance of SM Ventilation Subsystem. Group В1

Water sampling from Water Distribution and Heating Unit (БРП-М) to drink bags

Health Maintenance System (HMS) Spaceflight Cognitive Assessment Tool for Windows (WinSCAT) Test

СВО-ЗВ water sampling to Russian drink bags

Configure power cables to XF305 for future use

Cygnus PROX Switch OFF

Public Affairs Office (PAO) Social Media Event

PILOT-T. Preparation for the experiment.

Combustion Integrated Rack Rack Doors Open

SPHERES Battery Swap

ESA Weekly crew conference

PILOT-T. Experiment Ops.

Combustion Integrated Rack Front End Cap Open

Health Maintenance System (HMS) PPE Kit Restock

PCS Laptop Relocate

Restore setting of VCA2

ACME Chamber Insert Configuration

Environmental Health System (EHS) Total Organic Carbon Analyzer (TOCA) Sample Data Record

High Definition Video Camera Assemby 2 Activation in High Definition Mode

Telescience Resource Kit Laptop Setup

ABOUT GAGARIN FROM SPACE. HAM Radio Hardware Activation

High Definition Video Camera Assembly 2 Switch to SD Mode

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

Environmental Health System (EHS) – Microbial Capture Device (MCD) and Coliform Water Sample Analysis 44 +/- 4 hours post processing

PILOT-T. Closeout Ops

ISS HAM Video Power Up

Photo/TV Ghost Camera in Cupola Downlink

Photography of pipeline joints and sealing elements delivered on Progress 419

Combustion Integrated Rack Front End Cap Close

Combustion Integrated Rack Rack Doors Close

Extravehicular Mobility Unit (EMU) Swap

IMS Update

Crew Departure Prep

Extravehicular Mobility Unit (EMU) Helmet Swap

Ultrasound 2 HRF Rack 1 Power On

Health Maintenance System (HMS) Ultrasound 2 Scan

Inventory Management System (IMS) Conference

Crew Discretionary Event

Completed Task List Activities

Environmental Health System (EHS) – Microbial Air Sampler (MAS) Kit Sample Collection

Ground Activities

All activities are complete unless otherwise noted.



Cygnus positioning and release.

Three-Day Look Ahead:

Thursday, 12/07: PEPS Inspection, CQ Cleaning, Eye exams, ELF, EIISS, Crew Handover

Friday, 12/08: Soyuz OBT, Dragon OBT, RAM Retrieve, NASA Platform2, Arthrospira

Saturday, 12/09: Probiotics, Off Duty

QUICK ISS Status – Environmental Control Group: