NASA astronaut Matthew Dominick recently demonstrated a unique aspect of eating in space - the challenges and entertainment that come with it. In a video posted on X, Dominick shows how ketchup leaks out like water from a garden hose in zero gravity. The condiment pools up and forms a "ketchup castle" on his chin. This phenomenon highlights the difficulties of everyday activities in space. Tomatoes and tomato-based products, including ketchup, have been used in experiments at the International Space Station to study plant growth without soil and improve farming techniques.

Source: https://www.popsci.com/science/ketchup-in-space/