Abstract: Dark matter, dark beer, dark times (Happy Halloween!). The day before we gather is not only All Hallows’ Eve, it’s also #DarkMatterDay. But what is dark matter exactly? Well, it makes up five times more of the matter in the universe than all the stars, planets, galaxies and other “regular matter” we are used to, but scientists know more about what dark matter isn’t than what it is. UW–Madison Physics Professor Kim Palladino plans to take us on a journey of dark matter, which she says is gravitationally important for the formation of galaxies and the development of the universe. So, let Nomad – and the universe – pour you a stout and sit back as she explains how scientists are trying to uncover more about dark matter, including by placing large detectors deep underground. Completely free and open to all ages. Parking is available across from the bar in the Hancock Street lot after 6 p.m. Served by buses: 3, 4, 10, 38, 56, 57