Kepler discovered that planets move in elliptical paths around the sun. Repeated observations have confirmed Kepler's finding. Which type of scientific statement is Kepler's discovery?

A hypothesis is an initial, testable statement made to explain observations or predict outcomes, which has yet to be thoroughly investigated. Kepler's discovery, however, is not merely a proposition; it has been extensively validated and is established as a reliable principle of planetary motion, thus transcending the status of a hypothesis.

An inference is a conclusion drawn from evidence or reasoning rather than direct observation. While Kepler's laws were based on observations of planetary behavior, the laws themselves represent established facts rather than inferences. Hence, they cannot be categorized as such.

A theory is a well-substantiated explanation of an aspect of the natural world that incorporates facts, laws, and tested hypotheses. Although Kepler's laws are part of a broader theoretical framework in astronomy, the laws themselves specifically denote consistent patterns in observed data and are not theoretical constructs in their own right.