Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

Heliocentrism is the astronomical model in which the Earth and planets revolve around the Sun at the center of the Solar System . Historically , Heliocentrism was opposed to geocentrism , which placed the Earth at the center . The notion that the Earth revolves around the Sun had been proposed as early as the 3rd century BCE by Aristarchus of Samos , but at least in the medieval world , Aristarchus 's Heliocentrism attracted little attention -- possibly because of the loss of scientific works of the Hellenistic Era .
Heliocentrism

Dawn Lyn Nervik ( born January 11 , 1963 ) is a retired American actress best known for her role as Dodie Douglas during the last three seasons of the long - running family comedy television series My Three Sons . Her brother , Leif Garrett , is a singer .
Dawn Lyn

The Rockefeller Center Christmas Tree is a large Christmas tree placed annually in Rockefeller Center , in Midtown Manhattan . The tree is erected in mid November and lit in a public ceremony in late November or early December . Since 1997 , the lighting has been broadcast live , to hundreds of millions , on NBC 's Christmas in Rockefeller Center telecast on a Wednesday after Thanksgiving . The tree lighting ceremony is aired at the end of every broadcast , following live entertainment and the tree is lit by the current Mayor of New York City and special guests . An estimated 125 million people visit the attraction each year .

Rockefeller Center Christmas Tree