'Giant space pumpkin': NASA explains what made sun 'smile' days before Halloween

(NEXSTAR) – It may look all cute and cuddly, but the "smile" spotted in recent images of the sun triggered a geomagnetic storm watch over the weekend.An image from NASA's Solar Dynamics Observatory taken last Wednesday is drawing comparisons to a jack-o-lantern for the three noticeable black patches that some said looked like eyes and a toothless grin.Astrophysicist Brian Keating quipped on Twitter, "Breaking! On Halloween Eve, NASA captures a Giant Space Pumpkin!""Seen in ultraviolet ligh