Astronomy Cast

by Astronomy Cast · · · · 205 subscribers

Take a fact-based journey through the cosmos. Tune in to hear weekly discussions on astronomical topics ranging from planets to cosmology. Hosted by Fraser Cain (Universe Today) and Dr. Pamela L. Gay (Planetary Science Institute), this show brings the questions of an avid astronomy lover direct to an astronomer. Together Fraser and Pamela explore what is known and being discovered about the universe around us. Astronomy Cast is supported thru patreon.com/AstronomyCast.

466: Origins of Zero (0) Nov. 20, 2017
466: Origins of Zero (0) Astronomy Cast 466: Origins of Zero (0) by Fraser Cain & Dr. Pamela Gay
Ep. 467: Resonance Nov. 19, 2017
Many of the moons and planets across the Universe are in resonance with each other and their star. What causes this resonance, and how can it help us understand the history of planetary formation and migration?
We depend on zero for our math to work right, but this number was actually invented in fairly recent times. Why do we need zero? Was it inevitable?
465: Exploiting Interfering Light Astronomy Cast 465: Exploiting Interfering Light by Fraser Cain & Dr. Pamela Gay
Electromagnetic radiation, also known as “light” is pretty handy for astronomers. They can use it to directly and indirectly observe stars, nebula, planets and more. But as you probably know, light can act like a wave, creating interference patterns to teach us even more about the Universe.
464: Why the Hype over an Exorock? Astronomy Cast 464: Why the Hype over an Exorock? by Fraser Cain & Dr. Pamela Gay
Astronomers this week announced that they had discovered an asteroid or comet on a trajectory that brought it from outside the Solar System? Is this the first case of an object from deep space? And what can we learn from this discovery?
463: Pareidolia and the Moon Astronomy Cast 463: Pareidolia and the Moon by Fraser Cain & Dr. Pamela Gay
The man in the moon, the pyramids on Mars. Every cloud, ever. Humans have a tendency to pattern match when they're looking around the Universe - it's called pareidolia. What causes this behaviour, and how can we use this to debunk some hilarious conspiracy theories?
462: Modeling the Weather Astronomy Cast 462: Modeling the Weather by Fraser Cain & Dr. Pamela Gay
Have you noticed that weather forecasting has gotten much better in the last few years? Thanks to weather satellites, weather stations, and better forecasting techniques. How do scientists predict the weather with any kind of accuracy days or even weeks in the future.
461: Measuring the Weather with Satellites Astronomy Cast 461: Measuring the Weather with Satellites by Fraser Cain & Dr. Pamela Gay
What’s the weather doing? Is it going to rain today? How much? What about temperatures? We depend on modern weather forecasting, thanks, in part to the vast network of weather satellites. What instruments do they have, what orbits do they use.
460: Earth from Afar: Remote Sensing Astronomy Cast 460: Earth from Afar: Remote Sensing by Fraser Cain & Dr. Pamela Gay
The space age has given us the ability to look at every corner of the globe in every wavelength. It’s revolutionized our ability to predict the weather, keep track of environmental damage, and watch the world change. Today we look at what missions and technologies give us the ability to …
459: Arecibo Observatory Astronomy Cast 459: Arecibo Observatory by Fraser Cain & Dr. Pamela Gay
And now Cassini’s gone. Smashed up in the atmosphere of Saturn. But planetary scientists are going to be picking through all those pictures and data for decades. Let’s look back at some of the science gathered up by Cassini so far, and we can still learn from this epic journey.
458: The Science of Cassini Astronomy Cast 458: The Science of Cassini by Fraser Cain & Dr. Pamela Gay
And now Cassini’s gone. Smashed up in the atmosphere of Saturn. But planetary scientists are going to be picking through all those pictures and data for decades. Let’s look back at some of the science gathered up by Cassini so far, and we can still learn from this epic journey.
457: Why Did Cassini Have To Die? In Memoriam Astronomy Cast 457: Why Did Cassini Have To Die? In Memoriam by Fraser Cain & Dr. Pamela Gay