Each of them you can view in 3D, in realtime, in OpenGL. Check out what is in each of them. Adjust the settings, change them.
OPTIONS : + Set Predefined Galaxies (30 HD! available now) + Set Background type (7 available now) + Set Core type (3 available now) + Set Stars type (3 available now) + Set Stars count (for max speed reduce stars) + Set X-Ray type, on/off (default off) + Set Stars on/off + Accelerometer Sensor On/Off + Accelerate Camera left-right move + Random Galaxy On/Off, Random Timer + Moving speed
TIPS: + For system color Theme (Android 12+) If you set Galaxy, system Theme get colors from it. Sometimes it's set when you turn on/off screen, not immediately.