In April 2025, the James Webb Space Telescope made a groundbreaking discovery: a distant exoplanet, K2-18b, showed signs of dimethyl sulphide. A chemical that, on Earth, is only produced by life. The media went wild with the news that we had finally found a "fart planet," the first real biosignature of alien life. But then, as quickly as it appeared, the confidence began to fade.

Join Tristan and Scott as they investigate what really happened with the planet of alien farts. First, they dive into the incredible science of how we study distant worlds, from the mind-bending coolness of transit spectroscopy to the statistical nitty-gritty of "three sigma" confidence. Then, they pull back the curtain on the systemic pressures that create these cycles of hype and retraction, exploring everything from the "publish or perish" culture in academia to the perverse incentives that cause university press offices to overstate research. This isn't just a story about a potential discovery; it's a crucial lesson in scientific literacy and a look at how the messy, brilliant, and deeply human process of science actually works.

Stuff mentioned in the episode:

K2-18b

James Webb Space Telescope (JWST)

Cambridge University's original press release about the discovery

Dimethyl sulfide

The MIRI (Mid-Infrared Instrument) on JWST

Transit spectroscopy

The COLd Scale (Confidence of Life Detection scale) from NASA

Phosphine on Venus controversy

'Oumuamua

ALH84001 (Martian meteorite)

The Wow! Signal

Drake Equation

Pathological science

Andrew Wakefield vaccine study

Polywater

Cold fusion

N-rays (1903)

Science communication outlets mentioned: The Conversation, Science X, Tech Explore, Medical Xpress, Phys.org

Sodium vapor process (Mary Poppins special effects)

Get new episodes early and support the show on Patreon and Nebula!

Subscribe to It's Probably (not) Aliens for weekly episodes about cool ancient history! And give us a 5-star review if you have the time. It really helps us out!

Tristan Johnson Bluesky | Twitter | YouTube

Scott Niswander Bluesky | Twitter | YouTube

Follow the show on Bluesky or Twitter for more updates!

Ask us questions and send us topics to talk about at ProbsNotAliens.com

Music by Rod Kim | Cover art by Skutch

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Nutrition for Diabetes and Blood Sugar Control

The Nutrition Science Podcast

Fiber Intake Targets and Benefits

The AI-powered Podcast Player