The tiny sphere on the pedestal is a Pu-239 core. But the one on the left is U-233, a much less-common isotope.pic.twitter.com/aSUJxMBGLd
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
@AstuteDoofus But yeah, the Fat Man core was about the size of a baseball or so.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.