Heat is on: Huge shield must protect Mars rover MSNBC

When NASA’s newest Mars rover dives into the Martian atmosphere next year, it will be cocooned in the largest “beat the heat” system ever sent to the Red Planet.
To ensure that the nuclear-powered rover — called the Mars Science Laboratory (MSL), or “Curiosity” for short — survives its fiery entry and reaches a pinpointed landing spot, it will have a huge heat shield and back shell that together form a protective aeroshell.