The giant-impact hypothesis posits that billions of years ago a Mars-sized body named Theia collided with the early Earth.
About the Author
The giant-impact hypothesis posits that billions of years ago a Mars-sized body named Theia collided with the early Earth.
![[Aggregator] Downloaded image for imported item #79902](https://astrobitica.com/wp-content/uploads/2026/08/astronomers-catch-the-4.jpg)
![[Aggregator] Downloaded image for imported item #79851](https://astrobitica.com/wp-content/uploads/2026/08/mars-attacks-how-much.jpg)
![[Aggregator] Downloaded image for imported item #79845](https://astrobitica.com/wp-content/uploads/2026/08/nasas-lro-images-falco.jpg)