ISS Daily Summary Report – 3/24/2020

Transparent Alloys-SEBA: The crew successfully exchanged the Transparent Alloys Cartridge. The aim of the Transparent Alloys-SEBA (Solidification along an Eutectic Path in Binary Alloys) experiment is to study the morphological instabilities of directional solidified, transparent binary eutectic alloys under purely diffusive conditions. This experiment provides a real-time observation of the dynamics of eutectic front structures with a micron-scale resolution, over a large (centimetric) space scale, and over long (several 10 hours) periods of time. These observations are strongly sensitive to convective motions in liquid, which, in ordinary conditions on earth, entail a detrimental redistribution of the solute on a scale comparable to the container size. Such convective motions are suppressed in microgravity.

Vascular Echo: The crew performed an ultrasound using ECHO for a resting position session #2. Blood Pressure measurements were also taken. Cardiac and Vessel Structure and Function with Long-Duration Space Flight and Recovery (Vascular Echo) examines changes in blood vessels, and the heart, while the crew members are in space, and then follow their recovery on return to Earth. The results could provide insight into potential countermeasures to help maintain crewmember health, and quality of life for everyone.

Rhodium Space Microbiome: The crew inserted Chamber (s/n 0006) from the SABL incubator into cold stowage. Genomics Investigation of Human Gut Microbiome to Determine Effects of Microgravity Exposures (Rhodium Space Microbiome) examines the effects of spaceflight on the human gut microbiome, a complex community of numerous bacterial species. Developing a better understanding shifts in microbiome diversity and function and how they affect human health and performance may help protect people on future missions. Recent studies have shown a connection between alterations in the structure and function of the gut microbiome and multiple chronic and acute diseases.

Completed Task List Activities:

  • None

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

  • Atmosphere Revitalization System N3 MCA Vacuum Pressure Monitoring Mode Init
  • Mobile Servicing System (MSS) SpaceX-20 External Cargo Operations
  • Stow of the Special Purpose Dexterous Manipulator (SPDM)
  • Vascular Echo Resting Ultrasound Scan 125 Minutes

Look Ahead Plan

Wednesday, 3/25 (GMT 085)

  • Vascular Echo Leg Doppler PDOP Ops (CSA)
  • AstroPi Micro SD card to SSC (11&19) for OS upgrade (ESA)
  • MISSE MSC removal and stow (NASA)
  • PONDS Modules (s/n 1 through 12) install and initiate (NASA)
  • BFF Procedure Review (NASA)
  • CGBA4 status chk and Maintenance (NASA)
  • Rhodium Space Microbiome sample (s/n 0007) into MELFI (NASA)
  • STaARS kit (s/n 1012) into MELFI (NASA)
  • Standard Measures Presleep Questionnaire (NASA)
  • NanoRacks Module-51 Status 3 (NASA)
  • SPHERES Hardware Consolidate (NASA)
  • Bartolomeo removal from Dragon trunk (ESA)


  • Dragon Cargo Transfer
  • 74P transfer operations

Thursday, 3/26 (GMT 086)

  • Radi-N2 Detectors (8) retrieved (COL) and H/O to Russian crew (CSA)
  • Engineering Heart Tissue (EHT) Media change and fixation (NASA)
  • Standard Measures Postsleep Questionnaire (NASA)
  • BFF test print without cells (1 and 2) , and Syringe swap (4) (NASA)
  • EML Gas Vlv to Close (ESA-Joint)


  • Regen ECLSS operations
  • SSC Service Pack Queso Ops
  • SSC2 Reload from Load Image Server

Friday, 3/27 (GMT 087)

  • Blood Collection (CSA)
  • BFF hardware uninstall (NASA)
  • MVP2 Cell-03 Nutrient tube and waste tube replacement (NASA)
  • Food Acceptability (NASA)
  • JEM ORU Transfer Interface (JOTI) removal (NASA)


  • SpX-20 EVA Pack
  • Regen ECLSS operations
  • SSC Service Pack Queso Ops

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

  • Reminder 2 Vascular Echo Resting Ultrasound Scan
  • Reminder 1 Vascular Echo Leg Doppler Measurement
  • Soyuz 744 Kazbek Fit Check
  • JEM Airlock Press
  • Vascular Echo Ultrasound Echo Unit Setup
  • TERMINATOR. RSS2 Laptop SW Update.
  • Preventive Maintenance of SM Ventilation Subsystem. Group В2. Inspection of Air Conditioning System [СКВ1, СКВ2]
  • JEM Airlock Leak Check
  • Rhodium Space Microbiome US LAB HD Camcorder Video Setup
  • Rhodium Space Microbiome SABL Sample Removal
  • Rhodium Space Microbiome MELFI Sample Insertion
  • Food Acceptability Survey
  • Vascular Echo CDL Holter Arterial BP Measurement
  • Vascular Echo Resting Ultrasound Scan 125 Minutes
  • Installation of jumpers on Broadband Communication System (ШСС) Video Server
  • Cargo Transfer to Dragon
  • iPad iOS Update 1006
  • Environmental Health System (EHS) – Compound Specific Analyzer-Combustion (CSA-CP) Checkout
  • Environmental Health System (EHS) Total Organic Carbon Analyzer (TOCA) Water Recovery System (WRS) Sample Analysis
  • Inspection and integrity check of Kurs-A cables in DC1
  • Vascular Echo Ultrasound Echo Unit Stow
  • PAO Preparation
  • Public Affairs Office (PAO) High Definition (HD) Config JEM Setup
  • PAO Preparation
  • Equipment pre-pack for disposal via Cygnus (NG-13)
  • Public Affairs Office (PAO) Event in High Definition (HD) – JEM
  • Transparent Alloys Cartridge Exchange
  • MISSE-FF MSC Retrieval and Pack Procedure Review
  • Health Maintenance System (HMS) OCT2 Setup
  • Health Maintenance System (HMS) OCT2 Prep
  • Environmental Health System (EHS) Total Organic Carbon Analyzer (TOCA) Sample Data Record
  • Weekly check of video recording equipment performance on the ISS RS
  • Health Maintenance System (HMS) OCT2 Exams
  • CCE Preparation
  • High Definition (HD) Config JEM Camera Setup for Crew Choice Event
  • Crew Choice Event
  • Reminder 2 Vascular Echo Leg Doppler Measurement