From Space Weather:
A dark croissant-shaped hole has opened up in the sun’s atmosphere, and it is spewing a stream of solar wind into space. NASA’s Solar Dynamics Observatory took this picture of the vast opening during the early hours of Jan. 30th:
Live in high latitudes? Keep an eye on your night sky; the hole is the base of a solar wind from the sun, and may trigger auroras. Full details and a higher res image available at the link.