Final answer:
The formation of solar systems is described as the Nebular Theory because it is a widely accepted scientific explanation, but not a proven law. Theories are more accurate in explaining complex phenomena because they incorporate new evidence and provide explanations for underlying processes.
Step-by-step explanation:
The formation of solar systems is described as the Nebular Theory rather than Nebular Law because it is a widely accepted scientific explanation, but not a proven law. Theories are more accurate than laws in explaining complex phenomena because they can incorporate new evidence and discoveries. Laws are used to describe observed facts, while theories provide explanations for the underlying processes.