So, in Ascendency, you'll have at least three different systems available to you to explore (including God):
Asylia:

While its surface isn't blasted by Sovereign's intense heat to an extreme degree, Asylia's wafer-thin crust leads to an excess of heat and volcanic activity. Its surface is plastered with hardened flows of innumerable metals--the most common of which is, strangely, gold. Scientists from all four worlds are baffled as to why such a dense metal would continually make its way to the surface of the planet.
Thiiei uses Asylia's inhospitable environment to house a maximum security prison, namely for prisoners of war.
Asylia has one moon, a smouldering world with a runaway greenhouse effect.
Trith:

Trith is a frozen wasteland of ice and rock. Its atmosphere is composed of mainly argon. Before the advent of the Ascendancy War, Trith's natural resources were routinely exploited by all of God's political entities. Its chief exports are were neodymium, samarium, scandium, and other rarer metals. Now, with the War in full force, Trith is a heated battleground as all the major powers fight to control Trith's cold veins of ore.
Trith has two barren moons.