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Once a month, Purdue University's Professor Paul Duffell discusses astronomy and astrophysics with experts from around the world. Duffell and guests discuss sup...
Our universe isn't just a static, unchanging backdrop. It is constantly changing in time and we now have the technology to image it over and over again to explore all those changes. This is called Time Domain Astronomy, and Danny Milisavljevic is an expert in this field. He spends a lot of his time on the forensic science of exploding stars, to gain clues about the underlying processes that caused the explosion in the first place.
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55:08
Dr. Katelyn Breivik -- How Binary Stars Evolve
What would our solar system be like if we had two suns? Actually, this situation could be more common than you might think, as most stars are in binary systems. If a star is in a binary pair, how does that affect its life and death? Dr. Katelyn Breivik of Carnegie Mellon University tells us all about these systems and what scientists and other curious minds can learn from them.
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1:09:35
Dr. Kyoungsoo Lee -- Our Galactic Neighborhood
What's the biggest thing in the universe, besides the universe itself? Well, stars live in galaxies, and galaxies live in large collections called galaxy clusters. Astronomers can study these titanic clusters of galaxies to learn about how they grow and merge with each other to assemble the universe we live in today. Dr. Kyoung-Soo Lee takes us on a journey to the largest scales in the cosmos.
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1:10:16
Dr. Jason Wang -- Taking a Photo of an Exoplanet
For centuries, all that we have known about planets was confined to our own solar system, and its occasionally-changing number of planets (eight as of now). But in the past several decades, astronomers have developed increasingly sophisticated techniques for detecting planets outside our solar system, orbiting distant stars many light-years away. Dr. Jason Wang is an innovator who has developed powerful data analysis methods which have allowed us to take direct images of these exoplanets.
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46:01
Dr. Rosalba Perna -- The Neighborhood of a Supermassive Black Hole
Planets orbit stars, and moons orbit planets, so what orbits a supermassive black hole? Possibly a whole lot of stuff, including a gaseous disk, thousands of stars and more "normal size" black holes! Dr. Rosalba Perna tells us about all the crazy things that could be orbiting around the supermassive black holes that we detect at the center of active galaxies.
Once a month, Purdue University's Professor Paul Duffell discusses astronomy and astrophysics with experts from around the world. Duffell and guests discuss supernovae, galaxies, planets, black holes, and the nature of space and time.Supported by the National Science Foundation under grant AAG-2206299.Music by Brittain Ashford.Produced in beautiful Lafayette, Indiana by Paul Duffell.Follow us on BlueSky!