Answer:
The Ptolemaic view of the universe was geocentric: the Earth was at the center of the Universe, the Moon, Mercury and Venus circled around the Earth in that order, the Sun and the rest of the planets were after, and the starts were located far beyond.
The model of the Universe according to Nicolaus Copernicus was heliocentric: the Sun is at the center of the Universe, the Earth and the other planets circle around it, and the stars are far away and fixed.
What Galileo means by the statement is that neither model was incorrect, or sinful. The universe was created by divine intervention, and humans try to understand its shape. The Ptolemaic approach was an initial understanding of the divine creation, and the Copernican view was more advanced.
<span>With respect to major rivers, the Mekong is to Vietnam as the Irrawaddy is to Myanmar. Otherwise known as </span>Burma :)
