Missed your earlier post. For more info on this, please see the following sources:

1. "The case of Aryabhata and his detractors" by Ramkrishna Bhattacharya [ this article is present in the book "Philosophy, Science and Progress" (ed. Suman Gupta and Hiltrud Rustau). People's Publishing House. New Delhi, 1992.]

2. "History of Science and Technology in Ancient India: Astronomy, Science, and Society" by Debiprasad Chattopadhyaya. Firma KLM Pvt Ltd. Calcutta, 1996.

Further, please note that several Indian astronomers, including the famous Brahmagupta (who believed that the Sun moved around the Earth ) have carried out extensive rebuttals of Aryabhata.

-Satya

>
>Seven years ago (Tue, 26 Oct 1993 08:20:49 -9000), in response to a similar
>question, Michio Yano wrote the following:
>
>What is to be noted first is that Aryabhata's view is not 'heliocentric'
>but he just maintained that the earth rotates on its axis. There is no clue
>in Aryabhata's Aryabhatiya about how he got this idea. But we suspect that
>the idea was transmitted from Greek astronomy where similar idea was
>offered by Aristarchos. It is interesting to note that the Indian way of
>objecting this idea is very similar to that given by Ptolemy. I have
>written a paper on this topic: YANO, Michio "Aryabhata's possible Rebuttal
>to Objections tohis Theory of Rotation of the Earth", Historia Scientiarum
>19 (1980), pp.101-5.
>Michio YANO, Professor of Sanskrit, Kyoto Sangyo Univesity.
>yanom@kyoto-su.ac.jp
>_________
>
>Where exactly in the AryabhaTIya do you see this "clear and unambiguous"
>reference to heliocentrism?
>
>Best,
>
>Luis Gonzalez-Reimann
>University of California, Berkeley

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