Skywatch

  • October 16, 2008

    Episode 186: Cosmic Conundrum

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    Shownotes

    Astronomers using Hubble recently came across a mysterious object in the direction of the constellation Boötes that slowly brightened over 100 days then dimmed back to invisibility. Astronomers are used to supernovae -? exploding stars -? brightening the sky, but that flash happens quickly. This slow change in brightness doesn't match anything on the books. Nor does the object's spectrum line up with anything that could help identify it.