It is not unquestioned. Tilak has proposed a theory. And the main reasons for the theory are: 1. Mention of seven suns in the beginning, the number increasing subsequently to eight, ten and finally to twelve. 2. The mention of a dawn which lasted 30 days. 3. Existence of separate rituals for a two-month night (Ati-Ratra, Ratri-kratu, Asvamedha). 4. Mention of priests who completed their sacrificial session in nine or ten months (Navagwahas and Dashagwahas). If you have any other explanation for these, I would like to know that.
Namaste,
Did he question the validity of the entire Aryan myth (as a whole) or just the dates and places ascribed to the Mythical peoples existence by the propagators of the Myth?
Anyways, the Mantras themselves are interpreted differently by different people and sakhas/Darshans, and whose not to say that maybe the 12 suns are the 12 months, the 30 days of dawn all have a dawn in them, rituals performed at night for two months are not far fetched even today, taking months to complete yajnas is possible even today, the geography and times makes no difference.
But im not going to get into this debate again with you, i recently come across a book which was mentioned in one of Rajiv Malhotras talks but have not read it fully yet, i have started the section by B.B Lal which seams interesting.
THE INDO-ARYAN CONTROVERSY Evidence and inference in Indian history Edited by Edwin F. Bryant and Laurie L. Patton.
I recommend it to anyone interested.