We have sent so many rovers, landers, and orbiters to Mars over the past few decades, including the Perseverance rover. So surely we know just about everything we need to know about the red planet, right? Absolutely not! We don't even really know what underneath the surface of the crust or how Mars evolved to the point it's at now. It's thought that Mars once had conditions that were beneficial to life, instead of being the desolate wasteland it is today. Luckily, the InSight Mars lander is firmly planted on the surface finding out some critical information that can help scientists learn more about Mars and its evolution. Three new papers, just recently published in Science, shed some light on the composition of the interior of Mars. Let's talk about these pretty interesting results! Image from the journal Science.