This episode’s question is: we understand that gravitational lensing is one of the predictions of Einstein’s theory of general relativity but what is it?   If you have feedback or a topic suggestion you can email us.

S01E26: Gravitational Lensing

Join us to explore the universe. Each episode we tackle one question and ask Stuart Robbins, a professional astronomer, to help us understand the topic in under 5 minutes without a script.  The show is a crossover of the Exposing PseudoAstronomy podcast and the award winning The Reality Check podcast.

Natural Sciences

Science & Medicine

Social Sciences

Medicine

Science

And...we’re back, Astro Nuts! We kick off a fun-filled Season 2 with some corrections from Season 1. If you have feedback or a topic suggestion, email us.

S02E01: Corrections

This episode’s question is,  what is the Cosmic Distance Ladder and how does it work? If you have feedback or a topic suggestion, email us.

S02E02: What Is The Cosmic Distance Ladder?

This episode’s question comes from a listener named Todd who asks, “How do standard candles work? It seems like a really huge assumption that all of these stars are truly identical.” If you have feedback or a topic suggestion, email us.

S02E03: How Do Standard Candles Work?

This week, we welcome special guest and science enthusiast Ed Robertson. Ed is the frontman of Barenaked Ladies and wrote the theme song for Big Bang Theory. He asks, “Where does earth’s atmosphere end and where does space begin?” If you have feedback or a topic suggestion, email us.

S02E04: Where Does Earth’s Atmosphere End And Space Begin?

This episode is part 1 of 2 on the structure of the Sun, based on a question from listener Todd who asks, “How do we know what's going on inside the Sun? We can see the outside, but it's not like we can place seismometers on it like we do to measure the layers of the Earth.” If you have feedback or a topic suggestion, email us.

S01E26: Gravitational Lensing

Download our free app to listen on your phone