If the entire Pacific Ocean were somehow dumped into space, it would not form a solid ball of water sphere as you might imagine. In the absence of any external forces or constraints, the water would disperse and rapidly evaporate due to the conditions of the vacuum of space.
In space, there is no atmospheric pressure to keep the water in a liquid state. Without atmospheric pressure, the water would undergo a process called rapid vaporization or sublimation, where it would transition directly from a solid state (ice) to a gaseous state (water vapor) without passing through the liquid phase. This process occurs because the boiling point of water decreases significantly in low-pressure environments.
As the water molecules transitioned to a gaseous state, they would spread out in space due to the absence of gravitational forces to confine them. The resulting cloud of water vapor would likely disperse over time, becoming increasingly diffuse and eventually mixing with the surrounding space environment.
It's important to note that this hypothetical scenario is highly unrealistic and not feasible in practice. Dumping the entire Pacific Ocean into space would require an enormous amount of energy and resources far beyond our current technological capabilities. Moreover, the environmental and ecological consequences of such an action would be severe and detrimental to Earth's ecosystems.