From SMUPhysics http://status.hackerposse.com/url/17305 on Twitter: Wednesday Oct. 31 is International #DarkMatterDay for a second year! Watch this space for information about activities you can participate in on Wednesday to celebrate the mystery of dark matter! And check out http://status.hackerposse.com/url/17903 to find events near you! http://status.hackerposse.com/u…