May 27, 2008: Imagine a billion-ton cloud of gas launching itself off the surface of the sun and then ... doing a cartwheel. That's exactly what happened on April 9, 2008, when a coronal mass ejection or "CME" pirouetted over the sun's limb in full view of an international fleet of spacecraft. Even veteran solar physicists were amazed.

But that's not all. While one part of the cloud did a cartwheel, another part did a backflip at the same time. As strange as it sounds, this could be the normal way solar explosions unfold, say researchers analyzing the data.

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