Bobak "Mohawk Guy" Ferdowsi stops by to discuss what it like to out hair Adam Stelzner so much that he got a shout out from President Obama. Kevin pushes his wind storm on Mars theory to the point it's just plain awkward. They guys all the allure of the Power Ball illusion.

Konstantin Batygin discovered the ninth planet in our solar system all before turning 30! His advisor, having "killed" Pluto’s planet status, was also part of the discovery, which was by indirect means. Also joined by Comedian Amir K, catch him in the film The Pyramid, this month on HBO. Konstantin explains to Amir and the SYJ crew how certain he is that the new unnamed planet will found directly in the next few years.

New planet in our solar system found? Somehow, the whole Surely You're Joking team was lucky enough to get the head of the Planetary Society himself, Bill Nye, The Science Guy to tell us all about it! He gives the low-down on the new gas giant, Pluto replacement, evolution, GMO and the politics of funding and the Flint water crisis.

Comedian Drew Lynch pays a visit to Griff and Kevin when co-host Owen is off with Howie Mandel. Weirdly enough, Howie was Drew's biggest fan on the 10th season of America's Got Talent, giving him the Golden Buzzer and a standing ovation, launching him just short of the final victory. A few times Drew reminds the SYJ gang that he's not really a science guy. He's still hilarious.

SYJ's first returning guest, Adam Stelzner from JPL, drops by to give an update on Mars, talk about his new book, "The Right Kind of Crazy" and relays an anecdote about the most nerve wracking software update in history.

Rick Loverd just finished his new comic book "Venus". When he's not penning, Rick helps make movies scientifically accurate, by connecting movie makes like Marvel, with scientists, (including Kevin!) As head of the Science and Entertainment Exchange, Rick, Kevin and Griff talk about some of the previous projects he's worked on, like the 2011 Movie "Thor".

Over the holidays, Caltech Prof. Maria Spiropulu drops in from her very busy schedule split between CERN, Fermilab, and Washington DC, to meet the whole SYJ gang, to discuss the new tantalizing hints coming out of the LHC as it runs at the highest energy ever. Spiropulu describes how the world’s biggest machine may have just made the biggest scientific discovery of the last 50 years.

Ditched by the scheduled guest, Jimmy comes up with a brilliant plan to save the podcast session. Instead of a famous person, who writes a comics stip about grad school, why not just go straight to the source? Someone actually in grad school. So Jimmy brings back 2nd year grad student, Shyam Saladi, who is working on his PhD in biochemistry and molecular biophysics. The experiment works perfectly and Jimmy, Kevin and Griff bust out yet another hilarious episode Surely You’re Joking.

Josh Brener from HBO's Silicon Valley and The Big Bang Theory drops into which he had been on an episode with another science guest. The episode quickly spirals into a level of maturity far too low for a self-respecting scientist as bacteria names, probes on Uranus, Halloween costumes and phallified proton accelerators. Oh... and more space fish.

Senior editor for Carl Sagan's Planetary Society, Emily Lakdawalla, schools Kevin, Jimmy, Owen and Griff on ice volcanoes on Pluto and salty oceans on Europa and Enceladus. Aliens? Maybe on this worm ocean worlds. Emily explains what zircons are way better than any ol' diamond.