Simply because we cannot physically see it or sink bore-holes into it! So its internal structure and materials have to be calculated from seismic readings ( by applying a lot of very complex mathematics to results collated from seismographs around the world), and to some extent from igneous-rock analysis.
Scientific Theory! ------- Induction.. also it is made up of a... claim ,data ,and science knowledge
Scientific theory
I believe you are looking for the word "inferring".
Science is based on observations and repeated experimentation.
Observations from Earth-based telescopes are obscured by the atmosphere.
You are not directly observing it
knowledge
A "Theory".
Scientific Theory! ------- Induction.. also it is made up of a... claim ,data ,and science knowledge
a conclusion
a conclusion
infering is: The process of makeing an infrence, an interpretation based on observations and prior knowledge.
A conclusion.
theory
Scientific theory
It's an inference or inferInference is the conclusion drawn which is based on observations and prior knowledge. It involves the mental process of combining what is read or seen with relevant prior knowledge.
I believe you are looking for the word "inferring".