Educate yourself, enhance your boundaries & your peers with science, facts, and logic.
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Blog of string-theory skeptic Peter Woit. String theorists hate this guy, especially Luboš Motl, whose blog The Reference Frame I also submitted a logo for.

An opaque, nearly all-black logo.

The most important events in our and your superstringy Universe as seen from a conservative physicist's viewpoint

Fantastic Contraption is an online, physics-related game.

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This is the logo of arxiv.org, the most important database of physics and mathematics eprints. I made the smiley so that it resembles the original logo of that website.