Summary:
- NASA's InSight lander has detected numerous "marsquakes" on the surface of Mars, providing valuable insights into the planet's interior structure.
- The data from these marsquakes reveals that the Martian interior is not uniform, but rather has a "lumpy" or uneven composition, with variations in density and composition throughout the planet's mantle and crust.
- This information helps scientists better understand the formation and evolution of Mars, and how it differs from the Earth's interior, which has a more uniform structure.