International Docking Adapter (IDA)3 Extravehicular Activity (EVA): Crewmembers Nick Hague and Andrew Morgan successfully executed USOS EVA #55 within 6 hours and 31 minutes in order to accomplish the following tasks:

IDA3 cable routing and connections

IDA3 installation

IDA3 Multi-Layer Insulation (MLI) removal

IDA3 outfitting. Install Hemispherical (HEMI) reflectors (2) Install H-Fixture MLI Install PMA3 planar reflector cover

Connect second Truss Jumper and address ungrounded connector

EWC Ethernet Cable (W4300) routing

PMA3 Articulating Portable Foot Restraint (APFR) to Starboard CETA cart relocation

Port CETA APFR Ingress Aid (AIA) wire tie installation

Micro-15: The crew performed the Micro-15 fixation on the sample culture bags. The goal of this investigation is to better understand the effects of gravity on the differentiation of mammalian cells using 3-D cultures of induced pluripotent stem (iPS) cells. Past flight experiments and ground-based simulations have demonstrated that microgravity influences gene expression, cell proliferation, and differentiation in stem cells but the mechanism behind these observations is not clearly understood. This study investigates how exposure to microgravity fundamentally alters cell regulation and how these changes can affect the timing, progression, and outcomes of cell differentiation.

Remote Power Control Module (RPCM) Remote Power Controller (RPC) Trip: RPCM N32A2BE1 RPC-3, which powers the Node 3 Forward Port Intra-Module Ventilation (IMV) fan tripped open overnight. Ground teams are assessing telemetry and formulating a troubleshooting plan.

Completed Task List Activities:

None

Ground Activities:

All activities are complete unless otherwise noted.



EVA support

Payload ops support

Look Ahead:



Thursday, 8/22 (GMT 234)

Payloads:



Vascular Aging Blood Pressure (CSA)

NUTRISS Setup and Measurement (ESA)

MSPR2 cable attachment (JAXA)

RR-17 Habitat Restock and Access Unit Clean (NASA)

NanoRacks MOD-9 Ops 4 (NASA)

LSG Front Glove Swap (NASA)

Goodyear Sample Termination (NASA)

Micro-15 Drug Injection session D (NASA)

HRF Repository Frozen blood setup (NASA)

Food Acceptability (NASA)

Systems:

EVA debrief

EMU water ops

Friday, 8/23 (GMT 235)

Payloads:



Vascular Aging Blood Pressure data download (CSA)

Space Moss Sample fixation (JAXA)

ISS Experience in JEM (Space Moss) (NASA)

BioFabrication Facility Media Replace (NASA)

HRF Repository Urine and Blood Collect (NASA)

Standard Measures Saliva Collect (NASA)

RR habitat Water refill and Transporter setup(NASA)

ADSEP Photo (NASA)

Micro-15 Sample Fixation (NASA)

Food Acceptability (NASA)

Systems:

Dragon Release OBT

Dragon Cargo Operations

CUCU Crew Command Panel (CCP) Checkout

Today’s Planned Activities:

All activities are complete unless otherwise noted.

