NASA's Solar Probe Plus mission will set off to explore the sun's atmosphere in summer 2018.  CREDIT: Johns Hopkins University Applied Physics Laboratory/NASA

NASA's Solar Probe Plus mission will set off to explore the sun's atmosphere in summer 2018. CREDIT: Johns Hopkins University Applied Physics Laboratory/NASA

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NASA's mission to touch the sun launches soon

Wearing a nearly 5-inch coat of carbon-composite solar shields, NASA's Parker Solar Probe will explore the sun's atmosphere in a mission that is expected to launch in early August. This is NASA's first mission to the sun and its outermost atmosphere, called the corona.