![Expedition 54 Crew Portrait](https://blogs.nasa.gov/spacestation/wp-content/uploads/sites/240/2017/12/blog_iss054-s-002.jpg)
Six Expedition 54 crew members will spend Christmas orbiting Earth sharing a traditional meal and opening goodies delivered on recent cargo missions to the International Space Station. Veteran crew member Anton Shkaplerov of Roscosmos is spending his third holiday season in space.
Meanwhile, advanced space science is taking place seven days a week on the orbital lab as the astronauts explore a variety of phenomena that can only be revealed in the microgravity environment. Human research is especially important as doctors learn how to keep space travelers healthy and strong during spaceflight.
The station’s newest Flight Engineers, Scott Tingle of NASA and Norishige Kanai of JAXA, collected and stored their blood samples this morning for the Cell-Free Epigenome experiment. The samples will be analyzed later on the ground for cellular changes that take place in crew members while living in space.
Astronaut Joe Acaba of NASA is testing new research hardware today for its ability to maintain cell cultures and enable cellular experiment work. Acaba swapped out gear inside the Bioculture System that is being validated as a long-term biological research facility.
its gravitational effect simply
Astronauts return to their normal daily routines with work and family after spending some time adjusting to Earth’s gravity.