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When Your Secret Santa Is Bill Gates (6 pictures)

A Reddit user named Rachel got the surprise of a lifetime when she discovered the identity of her Secret Santa: Microsoft founder Bill Gates. The billionaire was assigned to her in the website’s annual Secret Santa Gift Exchange, and Rachel had known him only as “Bill.”

M57: The Ring Nebula

Except for the rings of Saturn, the Ring Nebula (M57) is probably the most famous celestial band. Its classic appearance is understood to be due to our own perspective, though. The recent mapping of the expanding nebula’s 3-D structure, based in part on this clear Hubble image, indicates that the nebula is a relatively dense, donut-like ring wrapped around the middle of a football-shaped cloud of glowing gas.