Editing Planetary system (section)

===Heliocentrism===
[[Heliocentrism]] is the doctrine that the Sun is at the centre of the universe, as opposed to [[geocentrism]] (placing Earth at the centre of the universe).

Some interpret [[Aryabhatta]]'s writings in [[Āryabhaṭīya]] as implicitly heliocentric although this has also been rebutted.<ref>Noel Swerdlow, "Review: A Lost Monument of Indian Astronomy," ''Isis'', 64 (1973): 239–243.</ref>

The idea was first proposed in [[Western philosophy]] and [[Greek astronomy]] as early as the 3rd century BC by [[Aristarchus of Samos]],<ref>[[#Reference-Dreyer-1953|Dreyer (1953)]], [https://archive.org/stream/historyofplaneta00dreyuoft#page/n148/mode/2up pp.135–48]; [[#CiTEREFLinton2004|Linton (2004)]], [https://books.google.com/books?id=B4br4XJFj0MC&pg=PA38 pp.38–9)].  The work of Aristarchus's in which he proposed his heliocentric system has not survived.  We only know of it now from a brief passage in [[Archimedes]]'s ''[[The Sand Reckoner]]''.</ref>https://books.google.com/books?id=B4br4XJFj0MC&pg=PA38 but received no support from most other ancient astronomers.