WE'RE ABOUT TO FLY A SPACECRAFT INTO THE SUN FOR THE FIRST TIME

Summary from the TLDR newsletter

The Parker Solar Probe will make its closest approach yet to the Sun on Christmas Eve. It will fly into the solar atmosphere for the first time. It is estimated that the probe's heat shield will have to endure temperatures in excess of 2,500 degrees Fahrenheit. The mission is aimed at finding the birthplace of solar wind.