So, how did we discover the inner and outer core?
(the more detail the better.)

Explanation:

Otah lowvely hooman I will explain. . .

“The theory of a liquid interior dates to Richard Dixon Oldham at the turn of the 20th century, but it was only in 1936 that Inge Lehmann discovered the inner core.“

“The discovery that the core of the Earth contains a solid inner core surrounded by a liquid outer core was made by seismologist Inge Lehmann“

           ( not my words tho :} )

Sad Shoyo hinata here that lowves vds not the mean one tho and everyone~<3

separation of church and state? not sure what you mean.