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DTSTART;VALUE=DATE:20260804
DTEND;VALUE=DATE:20260805
DTSTAMP:20260731T025947Z
CREATED:20260731T025947Z
LAST-MODIFIED:20260731T025947Z
UID:10001415-1785801600-1785887999@spacecalendar.com
SUMMARY:NASA Astronaut Chris Williams Post-ISS Mission Debrief
DESCRIPTION:2:45 pm EDT from Johnson Space Center\, NASA astronaut Chris Williams will recap his recent eight-month mission aboard the International Space Station. Williams returned to Earth on July 26\, after logging 241 days as an Expedition 73/74 flight engineer during his first spaceflight. He returned along with Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev\, completing 3\,856 orbits of the Earth over the course of their more than 102-million-mile journey. They also saw the arrival of six visiting spacecraft and the departure of eight. \nDuring his mission\, Williams supported a wide range of scientific investigations and technology demonstrations. He helped advance research for new cancer treatments and improved in-space manufacturing of materials used in high-performance computers and electronics. Williams also completed two spacewalks to prep for space station power system upgrades and to replace a faulty joint on the Canadarm2 robotic arm. The crew’s work aboard the space station helps improve life on Earth and prepare for future human missions to the Moon and Mars. \n 
URL:https://spacecalendar.com/event/nasa-astronaut-chris-williams-post-iss-mission-debrief/
LOCATION:Online
CATEGORIES:Mission Milestone
ATTACH;FMTTYPE=image/jpeg:https://spacecalendar.com/wp-content/uploads/2026/07/Astronaut-Chris-Williams.jpg
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DTSTART;VALUE=DATE:20260806
DTEND;VALUE=DATE:20260807
DTSTAMP:20260814T034300Z
CREATED:20260731T024443Z
LAST-MODIFIED:20260814T034300Z
UID:10001411-1785974400-1786060799@spacecalendar.com
SUMMARY:U.S. ISS Spacewalk 96
DESCRIPTION:NASA astronauts Jessica Meir and Anil Menon will exit the Quest airlock to install hardware that will modify the station’s 3B power channel and prepare it for the future installation of an International Space Station Roll-Out Solar Array (IROSA). The solar array\, scheduled for delivery later this year\, will be the seventh IROSA and will provide additional power to support critical station operations\, including its safe and controlled deorbit. \nWatch NASA’s live coverage of U.S. spacewalk 96 beginning at 7 a.m. The spacewalk is expected to start at 8:35 a.m. and last about six and a half hours. \nThis spacewalk will be the sixth for Meir and the first for Menon. Meir will serve as spacewalk crew member 1 and will wear a suit with red stripes. Menon will serve as crew member 2 and will wear an unmarked suit.
URL:https://spacecalendar.com/event/u-s-spacewalk-96/
LOCATION:Low Earth Orbit (LEO)
CATEGORIES:Mission Milestone
ATTACH;FMTTYPE=image/jpeg:https://spacecalendar.com/wp-content/uploads/2025/10/ISS-Human-Occupation.jpg
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20260818
DTEND;VALUE=DATE:20260819
DTSTAMP:20260814T034138Z
CREATED:20260731T024658Z
LAST-MODIFIED:20260814T034138Z
UID:10001412-1787011200-1787097599@spacecalendar.com
SUMMARY:U.S. ISS Spacewalk 97
DESCRIPTION:During U.S. spacewalk 97\, two astronauts will replace a Space-to-Ground antenna on the orbital complex. The antenna is a critical communication system NASA uses to transmit data and high‑speed communication between the Mission Control Center in Houston and the space station. This will be the 282nd spacewalk conducted in support of space station assembly\, maintenance\, and upgrades.
URL:https://spacecalendar.com/event/u-s-spacewalk-97/
LOCATION:Low Earth Orbit (LEO)
CATEGORIES:Mission Milestone
ATTACH;FMTTYPE=image/jpeg:https://spacecalendar.com/wp-content/uploads/2025/10/ISS-Human-Occupation.jpg
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20260825
DTEND;VALUE=DATE:20260826
DTSTAMP:20260818T021215Z
CREATED:20260731T024930Z
LAST-MODIFIED:20260818T021215Z
UID:10001413-1787616000-1787702399@spacecalendar.com
SUMMARY:U.S. ISS Spacewalk 98
DESCRIPTION:The U.S. spacewalk 98 crew members will connect power channel cables and data relay systems as part of ongoing maintenance\, including preparations for the space station’s future deorbit. The astronauts also will replace a navigational aid used for spacecraft docking on the Harmony module’s forward port. \nNASA will share additional details about U.S. spacewalks 97 and 98\, including timing\, assigned crew members\, and coverage information\, closer to each operation. \nThis will be the 283rd spacewalk conducted in support of space station assembly\, maintenance\, and upgrades.
URL:https://spacecalendar.com/event/u-s-spacewalk-98/
LOCATION:Low Earth Orbit (LEO)
CATEGORIES:Mission Milestone
ATTACH;FMTTYPE=image/jpeg:https://spacecalendar.com/wp-content/uploads/2025/10/ISS-Human-Occupation.jpg
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20260830
DTEND;VALUE=DATE:20260831
DTSTAMP:20260828T022058Z
CREATED:20251202T222158Z
LAST-MODIFIED:20260828T022058Z
UID:10000887-1788048000-1788134399@spacecalendar.com
SUMMARY:Launch Falcon Heavy / Nancy Grace Roman Space Telescope
DESCRIPTION:Launch set for 07:26 EDT | Roman spacecraft is 12.7 meters long and 4.4 meters wide when fully deployed. Its primary mirror is 2.4 meters in diameter\, which is the same size as the Hubble Space Telescope’s primary mirror. It will have sensitivity and resolution comparable to Hubble\, but a field of view 100 times larger\, combining excellent image quality with survey power. And it weighs 80% less than Hubble’s primary mirror\, showcasing an advancement in telescope technology.
URL:https://spacecalendar.com/event/net-oct-2026-nlt-may-2027-launch-falcon-heavy-nancy-grace-roman-space-telescope/
LOCATION:SLC-39A\, ~29°N\, Kennedy Space Center FL\, USA
CATEGORIES:Launch,Mission Milestone
ATTACH;FMTTYPE=image/jpeg:https://spacecalendar.com/wp-content/uploads/2025/12/Nancy-Grace-Roman.jpg
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