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Expedition 73 aboard the Worldwide House Station (ISS) continues to carry out its scheduled science and upkeep actions on humanity’s premier orbiting outpost, now greater than a quarter-century outdated. The Station has a brand new commander and a brand new set of crew members on the U.S. aspect of the complicated, as 4 astronauts departed this week to conclude their tour of responsibility on board ISS.
The Crew-11 mission efficiently launched on Friday, Aug. 1, at 11:43 AM EDT (15:43 UTC) and docked simply over 14 hours in a while Saturday, Aug. 2, at 06:26 UTC. Crew Dragon Endeavour set a brand new document for the shortest time from launch to docking; earlier Crew Dragon missions to ISS sometimes took round 19 hours to dock with the Station after launch.
After Endeavour docked to the zenith port on the Station’s Concord node module, the ISS briefly hosted 11 crew members. Crew-11’s astronauts settled into life aboard the orbiting outpost whereas additionally being assisted by Crew-10’s members, who have been “handing the baton” to Crew-11’s Zena Cardman, Michael Fincke, Kimiya Yui, and Oleg Platonov.
Sergey Ryzhikov (L) and Takuya Onishi (R) shaking palms through the ISS change of command ceremony. (Credit score: NASA)
In the course of the joint operations interval, Station commander Takuya Onishi handed off his command accountability to Roscosmos’ Sergey Ryzhikov. Ryzhikov will command ISS and the Expedition 73 crew till December, when he and his Soyuz MS-27 crewmates go away the Station and return to Earth, whereas Onishi returns to Earth after changing into the third Japanese to command ISS.
Crew-10’s Anne McClain, Nichole Ayers, Takuya Onishi, and Kirill Peskov boarded Crew Dragon Endurance and undocked from the Station on Friday, Aug. 8 at 22:15 UTC earlier than splashing down off the southern California coast on Saturday, Aug. 9 at 8:33 AM PDT (15:33 UTC). They returned to Earth with essential science samples aboard the Polar cell chilly storage locker.
Throughout their keep on ISS, Crew-10’s astronauts labored on many experiments, together with research on bodily and psychological change in astronauts throughout spaceflight and blood move from the mind to the guts in microgravity. ISS crews keep on the Station for as much as six months or so at a time, enabling a big database of how astronauts adapt to spaceflight.
Takuya Onishi within the Kibo module with the JEM Inner Ball Digital camera 2. (Credit score: NASA)
Their science program additionally included research on future lunar navigation methods, varied plant and seed experiments, investigations into how cells sense gravity, crystallization analysis, and assessments on robots that might free astronauts from performing sure duties, amongst different tasks.
Crew-11 additionally has an intensive science program to look ahead to. Highlights of Crew-11’s science program embrace a examine on producing stem cells in microgravity, work on a possible various to antibiotics, an experiment to supply vitamins that may stay viable for years within the house surroundings, and a Japanese plant cell division experiment utilizing tobacco cells and inexperienced algae.
Crew-11’s astronauts additionally could also be tasked with a spacewalk on the U.S. section that Crew-10 didn’t do. Crew-10 astronauts McClain and Ayers performed EVA-93. On Might 1, they labored on putting in a modification package for brand spanking new photo voltaic arrays in addition to an antenna relocation. The modification package set up was not accomplished and was put aside for the subsequent spacewalk, EVA-94.
Astronaut Anne McClain throughout EVA-93. (Credit score: NASA)
Nonetheless, EVA-94 has not but been performed, and shall be left for a future crew, very presumably for the Crew-11 astronauts. Each time this spacewalk takes place, the astronauts shall be tasked with finishing the photo voltaic array remedy package set up on the P4 truss on the 2A location, in addition to a number of different duties.
In addition to the change of command, the crew handover, and the return of Crew-10 to Earth which have already occurred, the CRS-33 cargo resupply mission can be scheduled for this month. CRS-33, utilizing Cargo Dragon C211 on its third flight, is at the moment set to launch on Thursday, Aug. 21, at 3:57 AM EDT (07:57 UTC) from House Launch Complicated-40 on the Cape Canaveral House Power Station.
Different cargo missions to the Station are solely a bit bit additional down the road. Progress MS-32 is scheduled to fly from Web site 31/6 at Baikonur Cosmodrome in Kazakhstan on Sept. 11 at 13:49 UTC, whereas the NG-23 Cygnus cargo mission is about to fly on a Falcon 9 from Florida no sooner than this September. The NG-22 mission was presupposed to fly earlier this yr however was canceled after the Cygnus spacecraft suffered an accident throughout transport to Florida.
Cutaway illustration of the HTV-X. (Credit score: JAXA)
Japan’s HTV-X is scheduled to make its first flight to ISS no sooner than this October. The HTV-X is a follow-on spacecraft to the sooner Kounotori car, which helped provide the Station from 2009 to 2020, and can have the ability to carry pressurized and unpressurized cargo to ISS like Kounotori did. Like Kounotori, HTV-X is disposed of with a damaging reentry in Earth’s ambiance.
HTV-X was designed to scale back mass and prices whereas rising the quantity of payload it may carry to the Station. The spacecraft may also have the ability to generate extra energy than Kounotori and can assist late cargo loading. HTV-X shall be launched by the H3-24L variant with 4 strap-on strong rocket boosters, and will probably be berthed to the Station utilizing its Canadian-built robotic arm.
One other new cargo spacecraft, Sierra House’s DreamChaser Tenacity, was presupposed to fly to the Station, however Tenacity remains to be in work and will not fly this yr. When the DreamChaser turns into operational, it’ll add an intact down mass cargo functionality that at the moment solely Cargo Dragon provides.
Axiom House’s Payload, Energy, and Thermal Module shell at Thales Alenia. (Credit score: Axiom House)
The present Expedition 73 submit Crew-10 complement, with the Crew-11 astronauts, together with Soyuz MS-27’s Ryzhikov, Alexey Zubritsky, and NASA’s Jonny Kim, shall be engaged on their scientific and upkeep duties whereas additionally aiding with cargo loading and unloading from the upcoming visiting autos.
Whereas Expedition 73 continues, selections are being made on the bottom in regards to the coming funds for the Station in addition to building on its attainable successors. VAST’s Haven Demo, designed to check key methods aboard its coming house station, is scheduled to fly later this yr, whereas Thales Alenia in Europe has accomplished the shell of Axiom House’s first house station module.
(Lead picture: Contained in the ISS Cupola. Credit score: NASA))
