It's time for the next clue in our hunt for dark matter rocks! Clue #4: If you wanted to find a copy of Fritz Zwicky's paper proposing Dark Matter, you might ask for help here. #SMUDarkMatter
0 replies
1 retweet
1 like
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.