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    NASA’s TRACERS Spacecraft Arrive at Launch Site

    Editor’s note: This post has been updated on June 17, 2025, with more information on the target launch date. NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) twin spacecraft have completed the final pre-shipment tests and have arrived at Vandenberg Space Force Base in California in preparations for launch later this year. The TRACERS […]

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    Science Maintenance and Window Inspections Kick Off Week

    Science maintenance supporting physics research gear and window inspections kicked off the beginning of the week for the seven-member Expedition 73 crew living and working aboard the International Space Station. Meanwhile, NASA, Axiom Space, and SpaceX are reviewing launch opportunities no earlier than Thursday, June 19, for the fourth private astronaut mission to the International Space Station, Axiom Mission 4.

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    NASA’s Artemis Science Team Inaugurates Flight Control Room

    In early June, NASA’s Artemis II lunar science team ran a mission simulation for the first time in the newly completed Science Evaluation Room (SER) at the agency’s Johnson Space Center in Houston. The team of scientists used the simulation to test how they will work together to lead lunar science activities during Artemis II […]

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    NASA-ISRO Earth-Observing Satellite Arrives at Indian Launch Site

    A two-panel image showing the NISAR satellite's arrival and preparation at a facility. The left panel depicts a white truck transporting a large, long white and blue container into a high-bay industrial building. The right panel shows the top half of the container being lifted by an overhead crane, revealing the NISAR satellite stowed below it. Several technicians in blue cleanroom suits and caps are observing the operation.

    The NISAR (NASA-ISRO Synthetic Aperture Radar) mission, an Earth-observing radar satellite jointly developed by NASA and the Indian Space Research Organisation (ISRO), moved another step closer to launch last month when it arrived safe and sound at Satish Dhawan Space Centre on India’s southeastern coast. Home to ISRO’s launch facilities, the center will host the […]

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    NASA, Axiom Space Delay Axiom Mission 4 Launch to Space Station

    NASA and Axiom Space are postponing the launch of Axiom Mission 4 to the International Space Station. As part of an ongoing investigation, NASA is working with Roscosmos to understand a new pressure signature, after the recent post-repair effort in the aft most segment of the International Space Station’s Zvezda service module.

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    Light Duty Day Aboard Station as Crew Awaits Axiom Mission 4

    The Expedition 73 crew members lightened their schedule on Wednesday following several days of Axiom Mission 4 (Ax-4) preparations including readying International Space Station systems, tablet computers, and temporary crew quarters. The orbital residents relaxed throughout the day while setting aside some time to continue ongoing human research and orbital maintenance.

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    NASA, Partners Delay Axiom Mission 4, Reviewing Launch Date 

    NASA, Axiom Space, and SpaceX are standing down from the launch opportunity on Wednesday, June 11, of Axiom Mission 4 to the International Space Station to allow additional time for SpaceX teams to repair a liquid oxygen leak identified during post-static fire Falcon 9 rocket inspections.  A new launch date for the fourth private astronaut mission will be provided once repair work is complete, pending range availability. 

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