The correct statement about the development of Copernicus's model after his death is: "His model was not accepted until many years later." After Copernicus's death in 1543, his heliocentric model of the solar system faced opposition and skepticism from many astronomers and scholars. It took several decades for his ideas to gain wider acceptance and for his model to be recognized as a more accurate representation of the solar system.
The heliocentric model of the solar system is a model in which the Sun is at the center of the solar system. In this model, Earth and the other planets revolve around the Sun. This is in contrast to the geocentric model, which placed Earth at the center of the universe. Copernicus's heliocentric model challenged the long-held belief that Earth was the center of the universe and significantly reshaped our understanding of our cosmic surroundings.
Lastly, Copernicus proposed the heliocentric model of the solar system in 1543. His groundbreaking work, titled "De Revolutionibus Orbium Coelestium" (On the Revolutions of the Celestial Spheres), presented arguments and evidence in support of the Sun-centered model of the solar system.