The millions of people who read and loved What If? still have questions, and those questions are getting stranger. Thank goodness xkcd creator Randall Munroe is here to help.

This November, the former NASA roboticist, Sunday Times Number 1 and international bestselling author and cartoonist will be live on stage giving serious scientific answers to absurd hypothetical questions to celebrate the publication of his new book, What If? 2.

Planning to ride a fire pole from the moon back to Earth? The hardest part is sticking the landing. Hoping to cool the atmosphere by opening everyone’s freezer door at the same time? Maybe it’s time for a brief introduction to thermodynamics. Want to know what would happen if you rode a helicopter blade, built a billion-story building, made a lava lamp out of lava, or jumped on a geyser as it erupted? Okay, if you insist.

Before you go on a cosmic road trip, feed the residents of New York City to a T. rex, or fill every church with bananas, be sure to get your ticket for this practical guide to impractical ideas. Filled with bonkers science, boundless curiosity, and with the opportunity to ask your own questions on anything from swing-set physics to airplane-catapult design, this event will appeal to inquisitive thinkers of all ages.