Why Change Gravity?

In microgravity environments, such as on the International Space Station, the effects of gravity are significantly reduced. This creates both challenges and opportunities. Challenges include managing and separating liquids and gases within tanks and fluid lines, where gravity can no longer be relied upon to drive phase separation. At the same time, reduced gravity suppresses natural convection and sedimentation, providing greater control over processes such as crystal growth.

Beyond microgravity, the Moon and Mars offer distinct partial-gravity environments, with gravitational forces 1/6 and 1/3 that of Earth. If humanity is to establish a sustained presence on the Moon and Mars, it is important to understand how fluids, materials, and manufacturing processes behave across these different gravitational environments.

Increasing gravitational forces through hypergravity can enhance processes that depend on gravity. Higher gravitational forces can improve phase separation, increase sedimentation rates, and accelerate the removal of gas bubbles from liquids. Studying these processes across a range of gravitational conditions can help us better understand and control fluid and material behavior for future space-based applications.