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International Space Station

    Crew Works Wide Variety of Research and Awaits New Arrivals

    A yellow-green airglow blankets Earth’s horizon beneath a star-filled sky in this long-exposure photograph taken from the International Space Station as it orbited 265 miles above the cloudy Pacific Ocean off the coast of Chile. In the right foreground, the Soyuz MS-27 crew spacecraft is docked to the Prichal module, which is itself attached to the Nauka science module.

    High intensity exercising and droplets teeming with particles were the main research topics aboard the International Space Station on Tuesday. The Expedition 73 crew is also preparing to welcome three new crewmates this week while another trio gets ready to return to Earth next month.

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    NASA, Boeing Modify Commercial Crew Contract

    NASA Insignia

    In 2014, NASA awarded a Commercial Crew Transportation Capability contract to Boeing to fly astronauts to and from the International Space Station with its Starliner spacecraft. As part of its contract, Boeing was awarded up to six crewed flights to the orbital complex. After a thorough evaluation, NASA and Boeing have mutually agreed to modify […]

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    Week Wraps with Fluid Physics, Stem Cell Research as New Crew Preps Begin

    The Canadarm2 robotic arm releases Northrop Grumman’s Cygnus XL cargo craft after it was installed on the Earth-facing port of the Unity module. The International Space Station was soaring into an orbital sunrise 269 miles above the Atlantic Ocean southwest of Cape Town, South Africa, at the time of this photgraph.

    Expedition 73 wrapped up the work week continuing to study fluid physics and stem cells, preparing for next week’s new crew arrival, and unpacking a U.S. cargo spacecraft. The International Space Station residents also serviced exercise gear, performed life support system troubleshooting, and analyzed the orbital outpost’s microbial environment.

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    Station Orbiting Higher as Exercise Research and Maintenance Continue

    NASA astronaut and Expedition 73 Flight Engineer Zena Cardman installs research hardware inside the Destiny laboratory module’s Microgravity Science Glovebox. The equipment supports the Fluid Particles experiment, which helps researchers understand how particles in a liquid interface come together to form larger structures or clusters in microgravity. Results could advance fire suppression, lunar dust control, and plant growth in space. Earth benefits may include insights into pollen behavior, algae blooms, plastic pollution, and sea salt transfer during storms.

    The International Space Station is orbiting higher today after the Progress 93 cargo spacecraft, docked to the Zvezda service module’s aft port, fired its engines for over 14 minutes, 7 seconds at 8:04 a.m. EST on Wednesday. Back on the orbital outpost, the Expedition 73 crew focused its science activities on exercise research and fluid physics, both benefitting humans living on and off the Earth.

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    Heart Health, Stem Cells, and Physics Keep Crew Busy on Tuesday

    This tranquil view from the International Space Station captures the Kibo laboratory module with its Exposed Facility, a portion of the station’s main solar arrays (right), and part of the Canadarm2 robotic arm (left). The photograph was taken during an orbital sunset as the station soared 270 miles above a cloudy Atlantic Ocean off the coast of South Africa.

    Life science and physics topped the research schedule aboard the International Space Station on Tuesday as the Expedition 73 crew studied heart health, stem cells, fluid physics, and spacecraft fire safety. The orbital residents also completed work on a spacesuit and inspected ventilation and electrical systems while continuing other scientific operations.

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    Monday’s Research Studies Ways to Protect Eyes and Lungs in Space

    Four Expedition 73 flight engineers pose for a playful portrait through a circular opening in a hatch thermal cover aboard the International Space Station. The cover provides micrometeoroid and orbital debris protection while maintaining cleanliness and pressure integrity in the vestibule between Northrop Grumman's Cygnus XL cargo spacecraft and the orbital outpost. The opening allows for visual inspection of hatch alignment, access to the hatch handle or pressure equalization valve, and visibility for sensors or cameras during berthing operations. Clockwise from left, are JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui and NASA astronauts Jonny Kim, Zena Cardman, and Mike Fincke.

    Expedition 73 kicked off the week exploring how to prevent space-caused vision problems and what happens to the respiratory system in microgravity. The International Space Station residents also worked on combustion research and Earth observation gear, organized food and cargo inventory, and serviced life support systems.

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