How do we measure the gravitational constant?

Daniel, Kelly, and Katrine talk about biofilms, and how they can be delicious, adorable, and bad. For the bad ones, we discuss current tactics for overcoming them.Show links: 1. Nature's cutest symbiosis: The Bobtail Squid: https://www.youtube.com/watch?v=3ivMSCi-Y2Q 2. The Joyfu ...  Show more

Daniel and Kelly discuss whether ideas from science fiction have inspired real scientific or technological progress.See omnystudio.com/listener for privacy information. 

As far as weight goes, Earth is a pretty hefty celestial body. But exactly how heavy? And how does one measure something so massive? Find out in this podcast from HowStuffWorks.com.

La recherche d'une vie en dehors de la Terre occupe les scientifiques du monde entier mais enflamme aussi l'imagination de nos contemporains. Pour encadrer cette quête avec une plus grande rigueur, la NASA a mis au point ce qu'elle appelle une échelle de "confiance".

Once more, it's time for a weekly dose of Stuff to Blow Your Mind and Weirdhouse Cinema listener mail...See omnystudio.com/listener for privacy information. 

Why is it so hard to get a picture of the Milky Way? How much of our galaxy have we mapped? What the heck is a "barred spiral" and what does that have to do with our core? I discuss these questions and more in today's Ask a Spaceman!