According to Mr. Webster
Main Entry: scientific method
Function: noun
Date: circa 1810
: principles and procedures for the systematic pursuit of knowledge involving the recognition and formulation of a problem,
the collection of data through observation and experiment, and the formulation and testing of hypotheses
Main Entry: the·o·ry
Pronunciation: \ˈthē-ə-rē, ˈthir-ē\
Function: noun
Inflected Form(s): plural the·o·ries
Etymology: Late Latin theoria, from Greek theōria, from theōrein
Date: 1592
1 : the analysis of a set of facts in their relation to one another
2 : abstract thought :
speculation
3 : the general or abstract principles of a body of fact, a science, or an art <music theory>
4 a : a belief, policy, or procedure proposed or followed as the basis of action <her method is based on the theory that all children want to learn> b : an ideal or
hypothetical set of facts, principles, or circumstances often used in the phrase in theory <in theory, we have always advocated freedom for all>
5 : a plausible or scientifically acceptable general principle or body of principles offered to explain phenomena <the wave theory of light>
6 a : a
hypothesis assumed for the sake of argument or investigation b : an
unproved assumption : conjecture c : a body of theorems presenting a concise systematic view of a subject <theory of equations>
synonyms see
hypothesis
Theory = speculation, unproved assumption, hypothesis
Scientific method = collection of data through observation and experiment
Based on Mr. Webster the Planet of Pluto, the Flat Earth, and the Observation of Stars
are theories.
http://www.astro.com/astrology/in_pluto_e.htm
Pluto before was considered a planet, some astronomers concluded UB313 to be a planet as well (some, meaning not all were able to come to a clear agreement back then). They also tweaked and created a new definition for what a planet is.
Tweaking and changing the current definitions and theories in science is going to always be a constant process. Science will never be 100% faultless and perfect. What more are falliable theories that aren't 100% provable. Many things that science was able to accomplish of course have advanced us, but only to a certain extent.