A Halloween edition of Astronomy on Tap Canary Islands, the informal outreach series that brings current astronomy into a relaxed social setting. The evening features two accessible talks by researchers from the Instituto de Astrofísica de Canarias.

• Evanthia Hatziminaoglou (IAC): “The Dark Side of the Universe”.
• José Manuel Pérez Martínez (IAC): “Shepherds of Galaxies”.

The programme also includes an interactive science quiz with prizes and opportunities for audience questions. Admission is free until capacity is reached.