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)

Payloads:

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)

Systems:

Dragon Cargo Transfer

74P transfer operations

Thursday, 3/26 (GMT 086)

Payloads:

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)

Systems:

Regen ECLSS operations

SSC Service Pack Queso Ops

SSC2 Reload from Load Image Server

Friday, 3/27 (GMT 087)

Payloads:

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)

Systems:

SpX-20 EVA Pack

Regen ECLSS operations

SSC Service Pack Queso Ops

Today’s Planned Activities:

All activities are complete unless otherwise noted.