Well technically speaking they don't know what it looks exactly like its just an estimate I on what it looks like I mean you could dig your entire life and not even get through the athenoshpere
Geothermal energy readings.
each layer in earth has diffrent material that is cuse diffrent propertis. natural or man made Wave when it come from inside of the earth show difftent propertis .this is main reason of layering earth .
Theoretically, scientist do not know what the sun looks like through this perspective. The only way to know is to actually be there. However, research using inductive and deductive empirical reasoning to make accurate assumptions.
If we do not know we can not answer.
we know whats inside the earth because there is earthquake wave
by studying artifacts found on earth
Because they can see it.
i don't know ask a scientist
beacuse.
i dont know about the answer
If you look at who they are inside, and not judge by looks.
Its not like that there is no such things like that the human does not know this EVEN THE SCIENTIST does not know this