Skip to Content

New Heat Shield for Mars Rover

The thermal protection system for Curiosity is bigger and better than anything before it.

NASA’s next Mars rover’s massive heat shield is finally ready for the robot. It is the largest heat shield ever built for a spacecraft destined for the red planet–not surprising since the rover is about the size of a small car and could endure temperatures up to 3,800 degrees Fahrenheit when it enters the Martian atmosphere.

Credit: Lockheed Martin

The heat shield is made from a novel material first used on Stardust, a comet-sample-return mission launched in 1999. The material’s properties make it ideal for high-peak-heating conditions such as those the rover, recently named Curiosity, will experience as it journeys to Mars.

Without an adequate thermal protection system or heat shield, the rover could burn up. This was proved tragically in 2003, when the space shuttle Columbia’s heat-resistant shield was damaged during launch. The damage went undetected, and the shuttle, left with a comprised system, lost structural integrity and broke apart during reentry to the Earth’s atmosphere.

However, the shuttle’s thermal protection system is a combination of reinforced carbon-carbon on the wing leading edge, thermal blankets on the fuselage, and thermal protective tiles covering the underside of the vehicle and the nose cap. It is meant to shield against heat loads since the shuttle undergoes multiple reentries. Curiosity’s heat shield is a large aero shell that covers the rover and is made of a material called phenolic impregnated carbon ablator, developed at NASA Ames Research Center. The material is low density so it can withstand searing temperatures, making it ideal for lunar and Mars missions.

The heat shield was manufactured by Lockheed Martin and is the largest ever built for flight–it’s 4.5 meters wide including the back shell, larger than the heat shields for the Apollo spacecraft (under 4 meters) and for the current Mars rovers, Spirit and Opportunity (2.6 meters). Uniquely, once Curiosity enters the Martian atmosphere, parachutes will deploy to slow its descent, and it will jettison its heat shield, using thrusters and a crane to reach the surface of Mars. (Watch a video of how the rover will land.)

Curiosity (formerly known as the Mars Science Laboratory) is scheduled to launch in the fall of 2011. Its mission is to gather scientific data to help determine whether there is or was life on Mars.

Keep Reading

Most Popular

Large language models can do jaw-dropping things. But nobody knows exactly why.

And that's a problem. Figuring it out is one of the biggest scientific puzzles of our time and a crucial step towards controlling more powerful future models.

OpenAI teases an amazing new generative video model called Sora

The firm is sharing Sora with a small group of safety testers but the rest of us will have to wait to learn more.

Google’s Gemini is now in everything. Here’s how you can try it out.

Gmail, Docs, and more will now come with Gemini baked in. But Europeans will have to wait before they can download the app.

This baby with a head camera helped teach an AI how kids learn language

A neural network trained on the experiences of a single young child managed to learn one of the core components of language: how to match words to the objects they represent.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.