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[–] littul_kitton ago 

Yeah, it's hot near the Sun.

The environment in this region is extreme, to say the least: During its closest encounters, the 10-foot-long (3 meters) Parker Solar Probe is expected to experience temperatures of up to 2,500 degrees Fahrenheit (1,370 degrees Celsius) and solar radiation intensities 475 times greater than we're used to on Earth.

Mission controllers will therefore retract the Parker Solar Probe's solar arrays as it approaches the sun and extend them as the spacecraft retreats, to keep panel power levels and temperatures from fluctuating too much. And the probe will be outfitted with a 7.5-foot-wide (2.3 m), 4.5-inch-thick (11.4 centimeters) heat shield made of advanced carbon-composite material, which will allow its four science instruments to operate at about room temperature, NASA officials said.