Fill in the blanks with the word that best completes each statement. Scientists develop knowledge by making
about the natural world that may lead to a scientific
question
A scientific question may lead to an)
which can be tested.
The results of
can lead to changes in scientific knowledge

copernicus finished the first manuscript of his book, "de revolutionibus orbium coelestium" ("on the revolutions of the heavenly spheres") in 1532. in it, copernicus established that the planets orbited the sun rather than the earth. he laid out his model of the solar system and the path of the planets.