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- 4 Jeffery Allen
- +1
- Asteroids™
- Windows Apps: Education By: BINARY SPACE
- * Free
- Lists: 0 + 0 0 0
- Points: 1 + 16 (4.6) Version: PC Since its formation over 4.5 billion years ago, Earth has been struck numerous times by asteroids and comets whose orbits bring them into the inner Solar System. These objects, ... ⥯
