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That means a crucial part of the telescope is the massive sunshield that will protect it from the heat of the sun. One of the main focuses of the launch is making sure the huge and complicated piece of equipment opens correctly.
The sunshield is the biggest part of this massive telescope, which has a primary mirror about 6. When it's completely unfolded, the sunshield is the size of a tennis court. An imposing exact replica is stored in a massive clean room at a Northrop Grumman facility in Los Angeles County, Calif. The aerospace technology company is partnering with NASA on the project. The sunshield's purpose can also be understood by thinking about the sunscreen you put on at the beach.
Designed to minimize the amount of extraneous heat hitting the scientific instruments, the sunshield is composed of five layers, each cooler than the one before it. The layers are made of a very heat-resistant material called Kapton that is coated in aluminum, and have a special silicon on the two outermost layers to reflect the sun's heat back into space.
Across the five kite-shaped layers, more and more heat is lost, radiating out into space in the gaps between them. The outermost layer will be hit by heat from sources like the sun and earth and could reach a toasty degrees F.
By comparison, the layer closest to the instruments will reach about degrees F. Scientists have specially crafted these layers in the hope the mission will last a decade. The team anticipates that over the course of those years, the sunshield will be hit by debris in space.
That's why each layer is basically a high-tech quilt. Scientists created each layer by stitching together 50 individual pieces with technology to prevent small holes or rips from getting too big. That technology is called rip stops. Related Insights. As podcast audiences broaden, so should advertiser engagement with listeners. Podcasting today. Notice: JavaScript is required for this content.
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