Question

What is Anaxagoras's Universe?

Answer 1

Anaxagoras' (500-428 BC) mathematical philosophy, on matter and motion on Earth and Heavens, are now relevant for research on formation of planets.

Explanation:

Anaxagoras philosophy:

All things have existed in some way from the beginning, but
originally they existed as infinitesimally small fragments of
themselves, endless in number and inextricably combined
throughout the universe.

All things existed in this mass, but in a confused and
indistinguishable form. There was an infinite number of homogeneous parts as well as heterogeneous ones.

Anaxagoras claimed that the cosmic rotary motion could produce
other worlds like our own.

Plato (born later) endorsed Anaxagoras' observation that lunar
eclipse is caused when Earth blocked sunlight falling on Moon..

Reference: http://plato-stanford.edu/entries/anaxagoras

and wiki Anaxagoras