You might be wondering where an event page is. Well there is literally no event that will affect all planets except the sun expanding.

2/3 planets (minimum to start
1/? Moons (not needed to start)
0/1 star (there needs to be a sun at the start)

Planet forms,
Name:
Appearance: (without life)
Size:
Moons: (if they have any)
Tags: (not required)
Password:

Moon forms,
Name:
Appearance:
Size:
Tags: (not required)
Password:

Star forms:
Name:
Appearance:
Size:
Tags: (not required)
Password:

I think that's all that is needed.