The Sun is ready for its close-up.Sunny Side UpThe European Space Agency has released an incredible video of the Sun's roiling surface, taken by its Solar Orbiter last year from a front-row vantage point.The dynamic video shows strands of energized particles leaving the star's lower atmosphere in the form of "coronal rain," with small eruptions of plasma dotting a fuzzy, "coronal moss" surface — a hellish perspective that required the daring orbiter to swoop by at an extremely close distance.Ove...