Because the Buddha seems to present a model of cosmology wherein the universe expands and contracts over extremely long periods of time, this description has been found by some to be consistent with the
expanding universe model and Big Bang. The Buddha seems to be saying here that the universe expands outward, reaches a stabilising point, and then reverts its motion back toward a central point resulting in its destruction, this process again to be repeated infinitely. Throughout this expanding and contracting process, the objects found within the universe undergo periods of development and change over a long stretch of time, according to the environment in which they find themselves. Following this passage above, the Buddha goes on to say that the "beings" he described in this paragraph become attached to an earthlike planet, get reborn there, and remain there for the duration of the life. As a consequence of this, physical characteristics change and evolutionary changes takes place. This is often interpreted as a very rough theory of
evolution. Furthermore, the Aggañña Sutta presents water as pre-existent to earthlike planets, with the planet forming with water and the life moving from the water onto the earth. Buddha does not talk about a specific earth, but about earthlike planets in general.
The Aggañña Sutta is often regarded with great reverence for an apparent theory about cosmology which predated similar theories in western science by well over two thousand years.
[edit] Additional views
It would be rash to conclude that what the Buddha is saying in the Aggañña Sutta is in complete agreement with scientific evolution. The Buddha also says that the reason beings are attracted to the earth is because it tasted good to them and they enjoyed eating the substance. This should be seen as attachment to likes and dislikes in former lives which result in the rebirth at specific locations according to the impressions mind has gathered in the past lives.
Because of some rather strange details found in the sutta, and more importantly because the sutta is quite long and overall is not about the creation of the world at all, some have interpreted this account to not be a literal description of the creation of the world and the process of life. Some scholars and practitioners believe that the Buddha is speaking metaphorically about the nature of attachment, and is thus giving a teaching about how the mind forms attachments to material things and objects of awareness, thus causing suffering. On the other hand, some scholars, such as
Richard Gombrich, argue that the entire sutra was intended as a parody of contemporary Hindu metaphysics, and therefore it should not be interpreted literally.