Here's why:

* Empirical Observation: Physical science relies heavily on empirical observation and experimentation to test hypotheses and develop theories. Laboratories provide a controlled environment for conducting these experiments.

* Quantitative Data: Physical science often focuses on quantifiable data and measurements. Laboratories provide the tools and equipment necessary for accurate and precise measurements.

* Specific Equipment: Many areas of physical science, such as chemistry, physics, and astronomy, require specialized equipment found in laboratory settings.

* Safety and Control: Laboratories provide a safe and controlled environment for handling potentially dangerous materials and equipment.

While physical science can be studied in other settings (like the field or through computer simulations), the laboratory plays a crucial role in its development and understanding.