Universe Today Podcasts With Fraser Cain

In this week's questions show, I answer if techno optimism is blinding us to the challenges of spaceflight, why there aren't spacecraft at all the planets right now, could the Great Attractor be dark matter? And more... Links to various raw images Cassini - https://solarsystem.nasa.gov/raw-images/raw-image-viewer/?order=earth_date+desc&per_page=50&page=0 Curiosity - https://mars.nasa.gov/msl/multimedia/raw/#/?slide=2496 Dawn - https://solarsystem.nasa.gov/missions/dawn/galleries/images/?page=0&per_page=25&order=created_at+desc&search=&tags=dawn&condition_1=1%3Ais_in_resource_list&category=51 00:33 Is techno-optimism blinding us to challenges of spaceflight 04:17 Why aren't there spacecraft at all the planets right now? 06:22 What if the Universe wraps? 08:39 Could the Great Attractor be dark matter? 10:21 What's the biggest telescope that could be built on the Moon? 11:50 Open your mind to crop circles 13:59 How do you steer a solar sail? 16:25 Twin planets in L3 Lagrange Point