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Guide To Space - How Do Ion Engines Work?

The 365 Days of Astronomy

Release Date: 11/07/2024

EVSN - Strong Evidence Found That Muons Deviate From Standard Model show art EVSN - Strong Evidence Found That Muons Deviate From Standard Model

The 365 Days of Astronomy

From April 14, 2021. Fermilab released the first results of their Muon g-2 experiment this week, and the fundamental particles don’t behave as predicted by the Standard Model of particle physics. Plus, dust, more dust, Martian water (again), and a review of Packing for Mars by Mary Roach.   We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.  Just visit: and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too!  Every bit helps! Thank you!...

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Actual Astronomy - Observer’s Calendar For November show art Actual Astronomy - Observer’s Calendar For November

The 365 Days of Astronomy

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. Episode 507. 1st - Carbon Star V Air best tonight 2nd - Saturn Neptune and Moon congregate in evening sky 4th - Two Shadows on Jupiter IO and Euorpa after 10pm here for us so that’s midnight EST. 5th - Full Moon (closest moon of the year) Asteroid Victoria at opposition. Asteroid "12 Victoria" is a large S-type (stony) asteroid in the main asteroid belt, discovered in 1850 by J.R. Hind. It orbits between Mars and Jupiter, recently, a meteor event occurred over Victoria, Australia, in August 2025, which...

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Awesome Astronomy - Comet 3I/ATLAS & Cerne Abbas Star Party show art Awesome Astronomy - Comet 3I/ATLAS & Cerne Abbas Star Party

The 365 Days of Astronomy

Paul Hill, Ralph Wilkins and Dr. Jenifer “Dr. Dust” Millard host.  Damien Phillips, John Wildridge and Dustin Ruoff produce. November Part 1. Time for a Comet 3I/ATLAS deep dive, a chat about Paul’s recent visit to the Cerne Abbas Starparty in Dorset and our new extended skyguide.   We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.  Just visit: and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too!  Every bit helps! Thank you!...

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Ask A Spaceman Ep. 259: Where Exactly is the Edge of the Universe? show art Ask A Spaceman Ep. 259: Where Exactly is the Edge of the Universe?

The 365 Days of Astronomy

Hosted by Dr. Paul M. Sutter. Is the Universe infinite? What about the cosmological horizons, the limits to what we can see? Will we ever know for sure what’s beyond them? I discuss these questions and more in today’s Ask a Spaceman!   Support the show: All episodes: Watch on YouTube: Read a book:   Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE!   Big thanks to my top Patreon supporters this month: Justin G, Chris L, Alberto M, Duncan M, Corey D, Michael P,...

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Astronomy Cast Ep. 34: Discovering Another Earth show art Astronomy Cast Ep. 34: Discovering Another Earth

The 365 Days of Astronomy

From April 29, 2007. What a week! Astronomers announced the discovery of an Earth-sized planet orbiting the nearby star Gliese 581! We talk about the technique used to discover the planet, the possibilities of finding even smaller planets, and what the future holds for finding another Earth.   We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.  Just visit: and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too!  Every bit helps! Thank you!...

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Travelers in the Night Eps. 345E & 346E: Asteroid Alert & Finding Treasure show art Travelers in the Night Eps. 345E & 346E: Asteroid Alert & Finding Treasure

The 365 Days of Astronomy

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. From July 2025. Today's 2 topics: - When Asteroid hunters discover a new object it is given a score ranging from 0 which means it is likely to be a distant main belt asteroid up to 100 which means that it is likely to come near to us. Each newly discovered asteroid which receives a score of 65 or greater is posted on the Minor Planet Center's Near Earth Object Confirmation Page so that telescopes around the world can track...

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Guide to Space - Is The Universe Perfect For Life? Understanding the Anthropic Principle show art Guide to Space - Is The Universe Perfect For Life? Understanding the Anthropic Principle

The 365 Days of Astronomy

From  Oct 19, 2015. Doesn't it feel like the Universe is perfectly tuned for life? Actually, it's a horrible hostile place, delivering the bare minimum for human survival.   We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.  Just visit: and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too!  Every bit helps! Thank you! ------------------------------------ Do go visit for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! This show is...

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EVSN - Giant Black Holes Cosplay as Little Red Dots show art EVSN - Giant Black Holes Cosplay as Little Red Dots

The 365 Days of Astronomy

From October 15, 2025. The Universe is hard enough to figure out without one kind of object dressing up as another, but - just in time for Halloween - researchers have figured out that the Little Red Dot in the early Universe just might be massive black holes surrounded in a costume of glowing red gas. Also in this episode, Hyabusa2's amusingly tiny destination, a white dwarf star eating what may be an icy dwarf planet, and tales from the launch pad.   We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.  Just visit: and donate...

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H’ad Astra Historia - Ep. 206: The History of HAD show art H’ad Astra Historia - Ep. 206: The History of HAD

The 365 Days of Astronomy

Today’s guest:  Prof. Kenneth Rumstay, emeritus of Valdosta State Univeristy, talks with us today about the history of the Historical Astronomy Division. We’ll learn not only about how it got started, but also about how HAD works for its members today.   H’ad astra historia is the official podcast for the Historical Astronomy Division of the American Astronomical Society. We’re here to share stories from and about the people who study the stars, planets, and the cosmos. We’ll be hearing from individuals who not only study the history of astronomy, but also those who lived...

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Cheap Astronomy - Dear CA Ep. 126: Going Deeper show art Cheap Astronomy - Dear CA Ep. 126: Going Deeper

The 365 Days of Astronomy

Hosted by Steve Nerlich. Dear Cheap Astronomy – What is the right message to send to the aliens? Keen listeners may be familiar with Cheap Astronomy’s ongoing despair at Earth’s lacklustre attempts at communication with the wider Universe. A few episodes back we ran through a history of deliberate communications to date, about 90 per cent of which have been music – well mostly digitized and some analog radio transmissions of music.   Dear Cheap Astronomy – Can we drill through the ice and find life on Europa? Firstly, there are quite a few moons out there with suspected...

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https://www.youtube.com/watch?v=6H0qsqZjLW0

The Most Efficient Propulsion System Out There

From  May 15, 2018.

People always ask me why we’re stuck with chemical rockets. Seriously, exploding a bunch of hydrogen or kerosene is the best we can do? 

 

Good news, there are other, exotic science fiction-sounding propulsion systems out there which use electromagnetic fields to accelerate atoms, allowing their spacecraft to accelerate for months at a time. 

 

I’m talking about ion engines, of course, and several spacecraft have already used these exotic thrusters to perform some of the most amazing missions in the exploration of the Solar System. 

 

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and send the Patreon link to them too! 

Every bit helps! Thank you!

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Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at [email protected].