Tracking and Data Relay Satellite (TDRS) 275 Failure: On Wednesday evening, White Sands Facility reported a timeout of the 275 satellite. This resulted in a loss of both S-band and Ku-band communications. The ISS team worked to fill comm gaps where possible. As of Friday, Network Specialists are still troubleshooting the issue with TDRS 275. …
Editor’s note: Here’s a roundup of the latest eye-catching earth science videos from NASA and beyond. In March, snow emerged as a theme. Where there is snow, there is water. Scientists trudged through thick white powder in Grand Mesa and the Senator Beck Basin to measure the depth of snow — and its water content — for […]
Rodent Research (RR) Habitat Stow: Following Tuesday’s completion of operations, today the crew stowed the RR habitats. The habitats were cleaned and sealed prior to their next use, planned for RR-5 scheduled for SpX-11. Advanced Plant Experiments (APEX)-04 Harvest: The crew removed the APEX-04 petri plate from the Light Microscopy Module (LMM) facility and harvested …
Mobile Servicing System (MSS) Operations: Overnight, the Robotics Ground Controllers unstowed the Robotic Refueling Mission (RRM) Payload from the Special Purpose Dexterous Manipulator (SPDM) Enhanced Orbit Replaceable Unit (ORU) Temporary Platform (EOTP). They then stowed the RRM on the Dragon Trunk Site 1 Passive Flight Releasable Attachment Mechanism (PFRAM). Next they released the RRM and …
2A Direct Current to Direct Current Converter Unit (DDCU) Trips: Today, all of the DDCUs on the 2A power bus tripped off simultaneously due to a bus undervoltage. This included DDCU 2A, DDCU LA2A, DDCU N2P2A, and DDCU N32A. The trip of DDCU 2A removed power from the 2A Pump Flow Control Subassembly (PFCS). Loads …
After a globetrotting journey that started in Texas and included stops in Belgium and Singapore, an 18.8 million-cubic-foot (532,000 cubic-meter) super pressure balloon (SPB) arrived in Wanaka, New Zealand, March 9, in preparation for another journey—one that should take it around the world multiple times. This is the third consecutive year NASA has flown the …
Rodent Research-4: Over the weekend and continuing today, the crew performed Rodent Research operations, in coordination with ground specialists, collecting samples and stowing them in Minus Eighty Degree Celsius Laboratory Freezer for ISS (MELFI) for return on SpX-10. The Tissue Regeneration-Bone Defect (RR-4) investigation studies what prevents vertebrates such as rodents and humans from regrowing …
The CYGNSS constellation was launched on 15 Dec 2016 and the eight spacecraft have been going through engineering commissioning, in which each of their subsystems is tested and adjusted for best performance. One important milestone was reached on 4 Jan 2017 when we made our “first light” science measurements. This happened the first time we […]
Advanced Plant Experiments (APEX)-04: The crew configured the Veggie facility for the next APEX-04 Petri Plate sample for a four-day growing cycle. After the four days of growth, the petri plate will be inserted into the Fluids Integrated Rack (FIR) Light Microscopy Module (LMM) facility for detailed imaging. The APEX-04 (Epigenetic change in Arabidopsis thaliana in response to …
