Webb et al feature the Parker Solar Probe which is about to take people closer to the sun than ever before and it's an audacious mission that will test technology - and the nerves of the scientists behind it - to the limit. Eugene Parker, a young postdoc at the University of Chicago, was investigating cosmic rays arriving at Earth from far off in the galaxy when an idea struck him. Parker Solar Probe project scientist Nicola Fox says, fears of a repeat of the 1859 storm -one that might wreak havoc with modern power systems, satellites and communications networks - fuelled a growing desire to take a closer look at the solar wind. Engineer Andy Driesman says, that there was a fundamental technological barrier to getting any closer: no material existed that was lightweight yet heat-resistant enough to shield the probe's instruments from the sun.
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