![](https://cdn.cnn.com/cnnnext/dam/assets/210727112156-mars-core-diagram-super-tease.jpg)
Three years after NASA’s Insight Lander arrived on Mars, its data reveals that Mars is larger, lighter and has a more liquid core than previously thought. CNN’s Kristin Fisher reports.
Three years after NASA’s Insight Lander arrived on Mars, its data reveals that Mars is larger, lighter and has a more liquid core than previously thought. CNN’s Kristin Fisher reports.