# NASA's 3D Model Reveals Earth's Irregular Shape

NASA has released a new 3D model that accurately maps Earth's geoid, showing it is not a perfect sphere but a lumpy, uneven shape. The model helps scientists study gravitational variations and sea level changes with greater precision. This matters for improving climate models and understanding Earth's internal dynamics.

**Importance:** 2/5

## Sources

### Technology
- [Wired](https://www.wired.com/story/nasas-new-3d-model-shows-lumpy-earth/) — Wed, 29 Jul 2026 09:30:00 +0000