#Space From #NASA on Zombie Twitter:

"Cryogenic fluid technologies are critical for human missions to the Moon and Mars and our future exploration goals. Today, during the #Starship test flight, we worked with #SpaceX to demonstrate a liquid oxygen propellant transfer. Teams are reviewing flight data to learn how it went."

The program's web page is at the link.

https://www.nasa.gov/tdm/cryogenic-fluid-management-cfm/