The International Space Station’s Expedition 74 crew is set to return to Earth after completing a significant long-duration mission. NASA will host a public event at Space Center Houston to welcome home astronauts Jessica Meir, Jack Hathaway, and Chris Williams (NASA), Sophie Adenot (ESA), and cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev (Roscosmos). This event offers a unique opportunity for the public and media to hear firsthand about the crew’s groundbreaking research and experiences aboard the orbiting laboratory.
Mission Highlights and Scientific Achievements
Expedition 74 astronauts dedicated over 1,400 hours to vital scientific research and technology demonstrations aboard the International Space Station. Their work spanned critical areas such as in-space manufacturing, with tests of metal and tissue 3D-printing technologies, and advanced human health studies focused on the effects of prolonged spaceflight. Key research areas included:
- Studies on blood flow and piloting capabilities under varying gravitational conditions.
- Activation of a new compact exercise system to combat spaceflight’s physical toll.
- Evaluation of life-support and environmental systems crucial for future exploration missions, including NASA’s Artemis program.
- Pharmaceutical research, including crystallizing proteins for cancer medications and advancing tumor targeting treatments.
- Cultivation of stem cells for therapeutic applications and the care of the first set of plants studied outside of curated systems.
- Upgrading an instrument designed to deepen our understanding of matter and develop new quantum technologies.
Beyond their research, the crew managed visiting spacecraft and performed essential maintenance, ensuring the continued operation of the orbiting laboratory. Their efforts in scientific discovery and international collaboration were also shared globally through educational events and stunning imagery.
Dual Departures and Extended Stays
The Expedition 74 crew comprised two distinct groups who launched and returned at different times. Astronauts Williams, Kud-Sverchkov, and Mikaev launched on the Soyuz MS-28 spacecraft from Baikonur Cosmodrome on November 27, 2025. They successfully returned to Earth on July 26, completing a 241-day mission that saw them orbit the planet 3,856 times and travel over 102 million miles. This mission marked the first spaceflight for Williams and Mikaev.
Meanwhile, astronauts Meir, Hathaway, and Adenot embarked on their journey aboard a SpaceX Dragon spacecraft as part of NASA’s Crew-12 mission, launching on February 13 from Florida. After more than seven months in orbit, they splashed down safely on October 8 in the Pacific Ocean. Their 237-day mission involved traveling over 100 million miles and completing more than 3,792 Earth orbits. This was Meir’s second spaceflight, while it was the first for Hathaway and Adenot. Notably, Roscosmos cosmonaut Andrey Fedyaev was also part of Crew-12 but will be unavailable for the public event.
Source: NASA
