Pluto. It’s a planet, then it’s not. This week we review Pluto’s history, from discovery to demotion by the International Astronomical Union. Learn the 3 characteristics that make up a planet, and why Pluto now fails to make the grade.
Astronomy Cast is a weekly podcast hosted by Fraser Cain from Universe Today, and Dr. Pamela Gay (of Slacker Astronomy fame). Each week we take a fact-based journey through the cosmos to explain the discoveries in astronomy, and understand how we know what we know.
Episode 1 – Pluto’s Planetary Identity Crisis
Click here to listen to the show.
Pluto’s Planetary Identity Crisis – Show notes and transcript
Or subscribe to the podcast at: astronomycast.com/podcast.xml
Here’s some information on Pluto.
Recent Posts
Astronomers Map the Shape of a Black Hole's Corona for the First Time
The Sun is surrounded by the corona, a region of superheated gas above the surface…
Yes, Virginia, The Universe is Still Making Galaxies
Despite the fact that our universe is old, cold, and well past its prime, it's…
Our Breathtaking Cosmos: New Zealand Astrophotography Winners Announced
The New Zealand Astrophotography Competition showcases and recognizes some of the most stunning images of…
Why are Some Quasars So Lonely?
At the centre of most galaxies are supermassive black holes. When they are ‘feeding’ they…
Congressional Hearing Fuels Fresh Debate About UFOs
An 11-page document that's attributed to a Pentagon whistleblower has provided new cases in the…
New Study Examines How Extraterrestrial Civilizations Could Become “Stellarvores.”
One of the most challenging aspects of astrobiology and the Search for Extraterrestrial Intelligence (SETI)…