Rob is joined by Grant for conversation about comets, GPS, and false memories in mice. We discuss the Arecibo message and the shape of the Ring Nebula. Links: The Zooniverse logo in space: http://www.spacetelescope.org/news/heic1417/ The Arecibo Message and how it will miss M13: http://en.wikipedia.org/wiki/Arecibo_message What shape is the Ring Nebula? http://www.robgendlerastropics.com/M57-HST-LBT-M.html and http://arxiv.org/pdf/1301.6636.pdf Rosetta mission landing sites: http://www.bbc.co.uk/news/science-environment-28923010 False memories implanted in mice: http://www.bbc.co.uk/news/science-environment-23447600 Galileo satellites put into wrong orbit: http://www.bbc.co.uk/news/world-europe-28910662 @kevinschawinski: is this the ultimate cat picture on the internet? http://news.sciencemag.org/physics/2014/08/heres-oddest-fuzzy-kitten-picture-you-ever-saw GIF for maths: http://www.iflscience.com/brain/math-gifs-will-help-you-understand-these-concepts-better-your-teacher-ever-did [MP3 Link] Episode #117. If you have anything you’d like us to look at, or any questions you’d like us to answer - use the links at the top of the web page at http://recycledelec.com. Follow us on Twitter @recycledelec @orbitingfrog and @chrislintott. Credits: Audio content Copyright 2011-2014 Chris Lintott and Robert Simpson. Many thanks to Oxford Press Office for recording space. Podcast Image of lightbulb courtesy of Flickr user bazik (http://www.flickr.com/photos/bazik/395792175/).