Scientists Uncover Strong Evidence of a Planet That Formed Earth, Debunking a 50-Year Theory
- Publish date: Monday، 11 May 2026 Reading time: 1 min read
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The idea that the Moon was formed by a giant impact with a Mars-sized body named Theia 4.5 billion years ago has been accepted by scientists for decades. But new research is undermining some of the old theory and providing some surprising insights into the enigmatic planet that helped form Earth. New deep Earth material studies and sophisticated simulations support the idea that Theia could have left behind traces within the Earth itself. The find may have implications that will help redefine our understanding of the origins of Earth, planetary impacts, and the explosive events that formed the early solar system.