Aristarchus is best known for two things, his belief that the Earth revolves around the Sun and his work attempting to determine the sizes and distances of the sun and moon. Although he wrote many volumes of commentary and analyses, his only surviving work, "On the Dimensions and Distances of the Sun and Moon," does not provide any insight into his heliocentric view of the universe. While the method he describes in it for obtaining the sizes and distances of the sun and moon are basically correct, his final estimates were wrong more due to a lack of accurate instruments and an inadequate knowledge of mathematics than to his methods.
It is said that Nicolaus Copernicus, himself, at first credited Aristarchus in his treatise, "De revolutionibus caelestibus," In it he wrote, "Philolaus believed in the mobility of the earth, and some even say that Aristarchus of Samos was of that opinion." This line was crossed out prior to its publication.
As with his birth and life, little is known of his death. A crater on the moon is named for him, in its center is a peak which is the brightest formation on the Moon.