Every Mars landing is a knuckle-whitening feat of engineering. But each attempt has its own quirks based on where a spacecraft is going and what kind of science the mission intends to gather.
You don’t need wheels to explore Mars. After touching down in November, NASA’s InSight spacecraft will spread its solar panels, unfold a robotic arm … and stay put. Unlike the space agency’s rovers, InSight is a lander designed to study an entire planet from just one spot.