space educational videos

SCIENCE

What If Another Sun Entered Our Solar System?

What If | November 9, 2025

With the vastness of the Universe, everything in it seems so spread out. But some objects are closer than you might realize. Every now and then, a random interstellar asteroid passes through the Oort cloud, the wall of icy debris at the very edge of our Solar System. But what […]

SCIENCE

What If the Atmosphere Was 10% Sulfur Hexafluoride?

What If | October 31, 2025

Thanks CuriosityStream for sponsoring this episode! Go to http://bit.ly/whatif-curiositystream for unlimited access to the world’s top documentaries and nonfiction series. Enter the promo code ‘whatif’ during the signup process and your membership is completely free for the first 30 days. Sulfur hexafluoride is more commonly known as SF6 or deep […]