Do Dolphins Dream of Space Travel? - Scientific American

Dr. Lucianne Walkowicz shares his expertise as guest blogger in this piece that will fan the flames of interest in anyone not already in love with astronomy. We can't sum up his topic more effectively than the doctor's own words: "We stand at the dawn of knowing that the universe teems with worlds, but not yet knowing if we are alone." One of the mysteries surrounding the company we keep in the cosmos may have just been answered: Alien megastructureĆ¢€™ star may be explained by interstellar junk. Dimming sporadically, Tabby's Star was originally thought to possibly be surrounded by an alien engineering project of massive proportion. This theory is being revised however, with interstellar comets seeming a more likely possibility. Now the search is on for an interstellar cloud that could cause the phenomenon. (CM)

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