Spacecraft With Revolutionary Heat Shield Will “Touch The Sun”
The closest that planet Mercury ever gets to the sun during its orbit is approximately 29 million miles, allowing surface temperatures to reach 800 degrees Fahrenheit (430 °C). And Earth’s average distance to the sun is 93 million miles. But, NASA has unveiled a “cutting-edge heat shield” that will make it possible for a space probe to “touch the sun” — or at least get a spacecraft to within 4 million miles of it…
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