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๐
โ๏ธ Solar System
The Moon
Earth's only natural satellite; formed 4.5 billion years ago; site of humanity's greatest journey
Solar System ๐ 4.5 Billion Years Ago Solar System
Key Facts
- 1
Average distance 384,400 km from Earth; diameter 3,474 km (27% of Earth's diameter)
- 2
12 humans walked on the Moon (1969โ1972): Neil Armstrong first, Gene Cernan last (Apollo 17, 1972)
- 3
Formed when a Mars-sized body (Theia) collided with early Earth ~4.5 billion years ago
๐ Did you know? The Moon is slowly drifting away from Earth at 3.8 cm per year โ in the far future it will escape Earth's gravity
Quick Reference
Category
Solar System
Region
๐ Solar System
Year / Era
4.5 Billion Years Ago
About
Earth's only natural satellite