Hosted by Dr. Jacinta Delhaize & Dr. Daniel Cunnama.

The 5th of December 2022 sees the commencement of construction of the long-awaited Square Kilometre Array (SKA)!

We are honoured to be joined by the SKA Observatory Council Chairperson, Dr. Catherine Cesarsky to talk about this momentous occasion.

The SKA Observatory (SKAO) is a next-generation radio astronomy facility that will revolutionise our understanding of the Universe and the laws of fundamental physics. Formally known as the SKA Observatory, the SKAO is an intergovernmental organisation bringing together nations from around the world. The observatory consists of the SKAO Global Headquarters in the UK, the SKAO’s two telescopes at radio-quiet sites in South Africa and Australia, and associated facilities to support the operations of the telescopes.

The SKA telescopes:

Composed of respectively hundreds of dishes and thousands of antennas, the SKAO’s telescopes will be the two most advanced radio telescopes on Earth. Together with other state-of-the-art research facilities, the SKAO’s telescopes will explore the unknown frontiers of science and deepen our understanding of key processes, including the formation and evolution of galaxies, fundamental physics in extreme environments and the origins of life.

Dr. Cesarsky was appointed Chair of the SKA Board of Directors in 2017, and her distinguished career spans some of the biggest international astronomy projects of recent years. As Director-General of the European Southern Observatory she oversaw the Very Large Telescope, the start of construction of the Atacama Large Millimeter Array (ALMA) and launched the Extremely Large Telescope project, one of the key astronomical facilities of the coming decades along with the SKA. Among her other prestigious roles, Dr Cesarsky was President of the International Astronomical Union and High Commissioner for Atomic Energy in France. She is known for her successful research activities in high energy and in infrared astronomy and is member or foreign member of science academies over the world, including Europe (Academia Europaea), France (Académie des Sciences), United Kingdom (Royal Society), United States (NAS), Sweden (Royal Swedish Academy of Sciences).

SKAO: https://www.skao.int/

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From May 6, 2021.

Researchers find that the “oddball supernova” of a curiously cool, yellow star was lacking the hydrogen content expected, “stretching what is physically possible.” Plus, finding potentially habitable planets, a gamma ray burst, ash clouds, and a new lunar map in this week’s What’s Up.

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https://www.youtube.com/watch?v=Wmxcvbb0clM

Ralph Wilkins hosts. 

Damien Phillips, John Wildridge and Dustin Ruoff produce.

From  Aug 5, 2022.

Blue Origin rocket developments seem to have been in development for decades. They've only just got their sub-orbital New Shepard rocket launching and, even now, they aren't launching that often. Their orbital New Glenn rocket keeps getting delayed and might even be obsolete to SpaceX rockets if it ever delivers.

With Elon Musk's SpaceX leading the way in commercial spaceflight and Branson's Virgin Galactic offering an alternative, has Jeff Bezos merely spent a lot of money on Blue Origin that he won't be able to recover?

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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].

Blowing off some steam.

Read by Barry Haworth and Duranee, written by Steve Nerlich, with technical advice from Stephen D'Souza.

- The orbit equation:

There are several orbit equations around, but this orbit equation tells you what orbital velocity you need

to maintain an orbit at a particular altitude.

- Entropy and the Inequality of Clausius:

Getting to this formula requires a bit of a story, but it’s worth it as it ends up explaining which direction

the Universe is moving in. The conversion of heat, a form of energy, into work dates back to ancient

Roman times, although heat engines built to do proper industrial work first appeared around the start of

the 17th century, mostly steam engines that first pumped water out coal mines and then later drove

locomotives, as well as driving a range of other piston-driven machines.

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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].

From August 17, 2023.

According to the NASA exoplanet archive, HAT-P-67 b holds the distinction of being the largest exoplanet in terms of size.  With exoplanet classification, one always needs to be careful - especially when it comes to size and mass - because there is a fuzzy boundary with large planets where if they become too large, they are considered a brown dwarf star.  This is a body that almost made it to star status but doesn’t have enough mass or material for nuclear fusion to take place.

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

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From June 23, 2008.

We’re learned about the failed missions to Mars in the past, and the current spacecraft, rovers and landers currently exploring the Red Planet. But the real prize will come when the first human sets foot on Mars. Robots are cheaper, but nothing beats having a real human being on the scene, to search for evidence of water and life.

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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].

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From Feb 13 & March 22, 2019.

Today's 2 topics:

- My Catalina Sky Survey teammate Hannes Groeller was asteroid hunting with our Schmidt telescope on Mt. Bigelow, Arizona when he discovered his first comet: P/2019 B2 (Groeller). After the Sun bakes out all of the frozen gasses, Hannes's Comet, will lose its coma and tail and become indistinguishable from one of the millions of main belt asteroids orbiting the Sun between Mars and Jupiter.

- NASA's Double Asteroid Redirection Test or DART for short will test methods to make a dangerous asteroid miss Earth.

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https://spacescoop.org/en/scoops/2035/a-missing-ingredient/

From September 10, 2020.

The Universe is full of unanswered questions. And more than a few unquestioned answers!

One of the biggest questions astronomers are trying to answer is what is the Universe made of? OK, sure, we know about protons, neutrons & electrons already.

But astronomers also know that the Universe is full of dark matter, but we still don’t fully understand it…Dark matter is a mysterious and peculiar material that got its name because it doesn’t give off any light - it’s totally invisible at wavelengths our eyes can see. 

Dark matter remains as elusive as Alice in Wonderland's Cheshire Cat. You can only see its grin (in the form of gravity) but not the animal itself. Yet, astronomers think there’s 5 times as much of this strange material in the Universe as there is normal matter that we can see. 

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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].

From September 28, 2021.

The inner solar system was a wild and wooly place as the planets were forming, and new research shows that the collisions that formed Earth and Venus were likely of the hit-and-run variety. Plus, polar ice loss warps the planet, and a black hole eats a star.

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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].

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. [email protected]

Mike Lynch grew up in Richfied, Minnesota. After two years at the University of Minnesota in the Twin Cities he transferred to the University of Wisconsin in Madison and earned his B.S. degree in Meteorology. Shortly after he was hired as a broadcast meteorologist at WCCO Radio in Minneapolis and has been there for over 30 years. Mike has covered all kinds of weather from deadly tornados to record cold snaps. In fact on February 2nd, 1996, he broadcasted from Tower, Minnesota when the temperature dropped down to 60 below zero, an all time record low for the state of Minnesota.

Mike’s other passion has been astronomy. He built his first telescope when he was 15 and for over 40 years has been teaching classes and putting on star parties through community education, nature centres, and other organisations throughout Minnesota and Wisconsin. His goal is to help people make the stars their old friends.

From 2004 to 2007 Mike wrote Astronomy/Stargazing books and WCCO Minnesota Weather Watch in 2007 and writes a weekly Starwatch column for the St. Paul Pioneer Press and more than two dozen other newspapers across the United States. His most recent book is “Stars: A Month-by-Month Tour of the Constellations!”

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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].