This is another long (59 minutes!) episode of The Skyentists, where astronomers Ángel López-Sánchez and Kirsten Banks talk about Mars with the excuse of the successful landing of NASA's InSight mission. But, how easy is landing on Mars? Actually, not at all, and to show this they play the game "landing on Mars" enumerating the failure or success of every mission humans have sent to the Red Planet. Ángel also talks a bit about the Viking program and Kirsten about the rovers Spirit, Opportunity and Curiosity. In "Space News" Kirsten discusses star-formation in galaxies and Ángel suggests to try to find an exoplanet using real NASA's TESS data included in the new Zooniverse citizen science project "Planet Hunters". We have some feedback (yeah!) and in some way 3 recommendations for "What's Up!": Mars, the bright comet 46P Wirtanen (that has been called "The 2018 Christmas Comet"), and the Geminids meteor shower peaking on December 15th. Be quick to observe them, though, as they will go away very soon!