Summary:
- The article discusses the detection of "marsquakes" on the planet Mars, which provide insights into the planet's internal structure.
- Seismic data from the InSight lander mission has revealed that Mars has a solid iron-rich core, similar to Earth's core, but much smaller in size.
- This information helps scientists better understand the formation and evolution of Mars, as well as the processes that shape the interiors of terrestrial planets in our solar system.