a theory is an explanation to a specific question being studied. it has been tested many times. it might be replaced with a new theory because new information come and so the past information will be improved.
a.if a new observations are made, it can be replaced.
The theory of biogenesis replaced the theory of spontaneous generation. Biogenesis states that living organisms can only arise from pre-existing living organisms, while spontaneous generation proposed that living organisms could arise spontaneously from non-living matter. The experiments by Louis Pasteur in the 19th century helped disprove spontaneous generation and supported the theory of biogenesis.
Scientific theories can be changed or replaced when there has been significant evidence for the change. The scientific method must be used to create a new hypothesis, which must then be proven.
It is the current working theory of the origin of the universe. It is the paradigm that Astronomy is based upon. But, new evidence is always being described. The theory itself might change as our knowledge grows.
Depends on whether all the theory is being contradicted or only a part of theory faces contradiction. For instance; the theory of evolution by natural selection would take a theory shaking hit if we found fossil rabbits in the Cambrian period, which has not happened. Only part of the theory of evolution by natural selection was contradicted by Mendelian genetics, when Mendel's much better heritability mechanism replaced Darwin's idea about blending inheritance. The theory only got stronger by this ratification.If that new evidence is solid enough, it may require a revision of the theory. If it is just shaky and occurs because of some error in the experiment, it is usually discarded as uncredible.
a.if a new observations are made, it can be replaced.
The theory would be modified or replaced.
Might be helpful if we new the theory....
The theory of biogenesis replaced the theory of spontaneous generation. Biogenesis states that living organisms can only arise from pre-existing living organisms, while spontaneous generation proposed that living organisms could arise spontaneously from non-living matter. The experiments by Louis Pasteur in the 19th century helped disprove spontaneous generation and supported the theory of biogenesis.
If a new theory better fits the data overall or simply because new and significant data disagrees or the method which brought about the original theory is invalid.
Because technology might change in the future.
The simple answer is people don't like change. And to have this new idea that goes against something that may have been believed for hundreds or thousands of years, will very likely be rejected at first.
Scientific theories can be changed or replaced when there has been significant evidence for the change. The scientific method must be used to create a new hypothesis, which must then be proven.
Evolutionary theory can account for the phenomenon of a new species. This is because different species can evolve from a common ancestor.
In the 1960s, researchers discovered several mountain ranges on the ocean floor. These mountains suggested that the earth's crust consists of 20 slabs or plates. The discovered led to a new theory called "Plate Tectonics."
Kepler completely replaced Copernicus's theory of the orbits of the planets, which was based on circles an epicycles, with a new theory using elliptical orbits. However Kepler retained Copernicus's idea of placing the Sun at the centre.
Until observations and experiments conflict with the theory