The Primary Nebular Stage
- ~875,000,000,000 years ago
- ~600,000,000,000 years ago
The Secondary Nebular Stage
- ~500,000,000,000 years ago
- ~400,000,000,000 years ago
- ~300,000,000,000 years ago
- ~200,000,000,000 years ago
- ~100,000,000,000 years ago
The Tertiary Nebular Stage
- ~75,000,000,000 years ago
- ~50,000,000,000 years ago
- ~25,000,000,000 years ago
The Quartan Nebular Stage
- ~10,000,000,000 years ago
- ~8,000,000,000 years ago
- ~7,000,000,000 years ago
- ~6,000,000,000 years ago
Monmatia — The Urantia Solar System >