Dark Matter Day! - Tuesday, October 31
Many of us look forward to October 31, that special day when all things dark and mysterious come out from hiding. That day is called...
...Dark Matter Day! Yes, Dark Matter Day is this Tuesday, October 31. Dark matter itself probably won't reveal its true nature to us on this day, but there are many dark matter events happening around the world to celebrate this historic hunt for the unseen. More information on various global, regional and local events, including how to get involved, can be found at the official Dark Matter Day website.
Oh, and happy trick or treating!