Final answer:
Galileo Galilei lived in the 1600s and believed in an infinite universe. He was tortured and killed by the Roman Catholic Church for his beliefs.
Step-by-step explanation:
In the 1600s, the Italian scientist Galileo Galilei believed in an infinite universe. He supported the Copernican heliocentric theory, which stated that the Sun, not the Earth, was at the center of the universe. Galileo's views contradicted the teachings of the Roman Catholic Church, which upheld the geocentric theory proposed by Ptolemy and Aristotle. As a result, Galileo was subjected to persecution by the Roman Catholic Church and spent the rest of his life under house arrest.