Final answer:
Yes, fluids exert buoyant forces in a weightless environment such as in the space shuttle.
Step-by-step explanation:
Yes, fluids do exert buoyant forces in a weightless environment such as in the space shuttle. Buoyant force is the upward force exerted by a fluid on an object immersed in it, and it depends on the density of the fluid and the volume of the displaced fluid.
Even in a weightless environment, the principles of buoyancy still apply. For example, if an object is placed in a fluid in the space shuttle, it will experience an upward buoyant force, which may cause it to float.