ISS Daily Summary Report – 10/25/2019

ACE-T6 (Advanced Colloids Experiment): The crew reconfigured the LMM (Light Microscopy Module) for the next ACE (Advanced Colloids Experiment) science runs. Colloids are suspensions of microscopic particles in a liquid, and they are found in products ranging from milk to fabric softener. Consumer products often use colloidal gels to distribute specialized ingredients, for instance droplets that soften fabrics, but the gels must serve two opposite purposes: they have to disperse the active ingredient so it can work, yet maintain an even distribution so the product does not spoil. Advanced Colloids Experiment-Temperature-6 (ACE-T6) studies the microscopic behavior of colloids in gels and creams, providing new insight into fundamental interactions that can improve product shelf life.

Cerebral Autoregulation: The crew performed measurements using the Cardiolab Portable Doppler unit and the Blood Pressure device. As the body’s most important organ, the brain needs a strong and reliable blood supply, so the brain is capable of self-regulating blood flow even when the heart and blood vessels cannot maintain an ideal blood pressure. The Cerebral Autoregulation investigation tests whether this self-regulation improves in the microgravity environment of space.

Muscle Tone in Space (Myotones): The crew completed skin markings measurements to support the Myotones experiment. Myotones investigation observes the biochemical properties of muscles during long-term exposure to the spaceflight environment. Results from this investigation are expected to provide insight into principles of human resting muscle tone, which could lead to the development of new strategies for alternative treatments for rehabilitation both on Earth and for future space missions.

Veg-04B: The crew performed a routine plant check, watered the plants as appropriate, and weighed any broken leaves using the Mass Measurement Device. The Pick-and-Eat Salad-Crop Productivity, Nutritional Value, and Acceptability to Supplement the ISS Food System (Veg-0404A, Veg-04B, and Veg-05) investigation is a phased research project to address the need for a continuous fresh-food production system in space. A healthy, nutritious diet is essential for long-duration exploration missions, which means that the typical pre-packaged astronaut diet needs to be supplemented by fresh foods during flight; the Veggie Vegetable Production System (Veggie) has begun testing aboard the space station to help meet this need, and validation tests have demonstrated that leafy greens can be grown in spaceflight. The research of Veg-04B focuses on the impact of light quality and fertilizer on leafy crop growth for a 56-day grow-out, microbial food safety, nutritional value, taste acceptability by the crew, and the overall behavioral health benefits of having plants and fresh food in space. 

VESSEL ID System: The Crew performed a shutdown, decabling and deinstallation/Stow of the VESSEL ID system. The Vessel ID System investigation demonstrates the ability of a space-based radio receiver to identify ships in the ocean. It also demonstrates the use of a simple device known as the Grappling Adaptor to On-Orbit Railing (GATOR), which can be used during a spacewalk to attach small equipment to external handrails on the ISS. The investigation could provide researchers an additional platform for mounting experiments while demonstrating a new means to identify ships at sea.

LSG (Life Sciences Glovebox): The crew performed a replacement of a failed LSG Work Volume right Fan. The status of the new fan is being assessed by the ground. LSG is a sealed work area that accommodates life science and technology investigations in a “workbench” type environment. Due to its larger size design, two crewmembers can work in the LSG simultaneously.


Waste Hygiene Compartment (WHC) Maintenance:  Today the crew performed WHC preventative maintenance to replace Flush Water Components including the water valve block and water lines.  In recent weeks, the crew has reported pretreat bad quality light indications on occasion.  Today’s preventative maintenance may help relieve those symptoms.

Simplified Aid for EVA Rescue (SAFER) Maintenance:  The crew performed preventative maintenance in order to check out SAFER Serial Number 1018 and Test Module seals.  They measured regulator pressure under flow and no-flow conditions, performed a leak check, measured the relief valve crack, and reset pressure to satisfy a two-year on-orbit maintenance requirement. SAFER is a small, self-contained, propulsive backpack system worn during spacewalks. If an untethered astronaut were to lose physical contact with the ISS, it would provide free-flying mobility to return to it.

Completed Task List Activities:

  • None

Ground Activities:
All activities are complete unless otherwise noted.

  • Payload Support Operations
  • LAB CDRA Activation

Look Ahead:

Saturday, 10/26 (GMT 299) Crew Off Duty

  • No planned activities


  • No planned activities

Sunday, 10/27 (GMT 300) Crew Off Duty

  • VEG-04B Plant check, watering and MMD measurements (NASA)


  • No planned activities

Monday, 10/28 (GMT 301)

  • CBEF Laptop setup (JAXA)
  • AMS EVA Procedure review (NASA)
  • Standard Measure Fecal collect setup (NASA)
  • RSD Ops (NASA)
  • AWP Evaluation (NASA)
  • VEG-04B H2O and MMD ops (NASA)
  • Food Acceptability Survey (NASA)
  • EML Lens switch and Gas Valve setting (Joint)
  • ISS HAM pass (NASA)


  • Cygnus Rendezvous Training
  • Cygnus C2V2 Checkout

Today’s Planned Activities:
All activities are complete unless otherwise noted.

  • Columbus cleanup for Myotones
  • Myotones Kit Gathering
  • Echo Unit Setup for Myotones experiment
  • Myotones Device Setup with EPM Laptop
  • Myotones Measurements
  • PROBOY. Penetration Simulator Ops
  • Myotones Ultrasound scan using ECHO Unit
  • Recharging Soyuz 746 SM-AGAT-U55 external batteries (2), start
  • ISS HAM Service Module Pass
  • Myotones Device Data Transfer
  • Health Maintenance System (HMS) – ESA Nutritional Assessment
  • Check that the Maritime Awareness Payload is OFF before disconnecting the RF cables for Vessel ID decommissioning.
  • Vessel ID System Uninstall
  • Environmental Health System (EHS) Potable Water Dispenser (PWD) Sample Collect
  • ISS Hardware Consolidate
  • Environmental Health System (EHS) Total Organic Carbon Analyzer (TOCA) Potable Water Dispenser (PWD) Sample Analysis
  • Environmental Health System (EHS) Coliform Water Processing
  • Waste and Hygiene Compartment (WHC) Pre Gather
  • Testing of Nikon MH-26 charger and Nikon batteries.
  • Waste and Hygiene Compartment (WHC) Water Valve Block (WVB) Remove and Replace
  • Echo Unit Stowage
  • Columbus cabin restore after Myotones experiment
  • IMS audit of FGB internal lighting system
  • Simplified Aid For EVA Rescue (SAFER) Checkout with Test Module
  • Applying b/c labels to FGB panels
  • Waste and Hygiene Compartment Flush Water Depress Line Remove and Replace
  • Waste and Hygiene Compartment (WHC) Flush Water Flow Adjustment
  • Environmental Health System (EHS) Total Organic Carbon Analyzer (TOCA) Sample Data Record
  • Resupply Stowage Platform (RSP) Stowage Move
  • Waste and Hygiene Compartment (WHC) Flush Tank Partial Fill
  • Recharging Soyuz 746 SM-AGAT-U55 external batteries (2), stop recharge
  • IMS Delta File Prep
  • Waste & Hygiene Compartment (WHC) Water Valve Block (WVB) Closeout