Podcasts about terrestrial magnetism

On today's episode, we'll be discussing the fascinating, multi-layered, and complex topic of space settlement and the myriad of things we'll need to figure out if we want to build an ethical and sustainable future society in outer space.  We'll be speaking with Dr. Erika Nesvold, author of Off-Earth: Ethical Questions and Quandaries for Living in Outer Space, which is set to release on March 7th, and explores the “potential ethical pitfalls of becoming a multi-planet species.”Erika earned her Ph.D. in Physics at the University of Maryland, Baltimore County and has conducted astrophysics research at the NASA Goddard Spaceflight Center, the Carnegie Institute's Department of Terrestrial Magnetism, and the NASA Frontier Development Laboratory.  She currently works as an Astrophysicist & Developer on the Universe Sandbox astronomy simulator game, and has written articles on astronomy, history, and other topics for Astronomy Magazine, The Planetary Society, and DamnInteresting.com.  More information on her research and writing can be found on her website.Erika produced and hosted the 13-episode Making New Worlds podcast, which explored the ethical issues involved in settling space.  In 2018, Erika co-founded The JustSpace Alliance in partnership with Lucianne Walkowicz.Erika has two upcoming books: Off-Earth: Ethical Questions and Quandaries for Living in Outer Space (MIT Press), coming out March 7, 2023, and is an update and expansion of Making New Worlds podcast, exploring the ethical challenges we'll face during space settlement.  She also co-edited an anthology called Reclaiming Space: Progressive and Multicultural Visions of Space Exploration (Oxford University Press), which is also coming out in 2023.We also want to extend a big thank you to our sponsors this year for supporting our show!Learn more about our Gold Sponsor Multiverse Media, an integrated media company focusing on space exploration, science, and technology, and check out the Cislunar Market Opportunities report produced by NewSpace Global, a Multiverse Media property, for a snapshot and user guide to the players and opportunities ahead for the cislunar economy.  To get your own copy please go to cislunar.report and use coupon code citizen10 for 10% off a single user license.Learn more about our Silver Sponsor the Colorado School of Mines Space Resources Program, a first-of-its-kind interdisciplinary program that offers Certificate, Master of Science, and Ph.D. degrees for professionals around the world interested in the emerging field of extraterrestrial resources here.Support the showSubscribe to our newsletter and follow us on social media!Instagram: @thecelestialcitizenTwitter: @celestialcitznLinkedIn: Celestial CitizenYouTube: @thecelestialcitizen

Larry Nittler, Department of Terrestrial Magnetism at the Carnegie Institution for Science, discusses his use of microscopic analyses to understand what tiny grains of dust in meteorites can tell us about the evolution of stars and the matter that became the sun and planets.

Featured Guest: Scott Sheppard On the hunt for the solar system’s elusive Planet X, a team of astronomers accidentally stumbled upon the discovery of 12 new moons of Jupiter. Oops. But it gets even better, because one of these things is not like the others and the way that moon just doesn’t belong might just solve the mystery of lunar origins. To help us understand how one very happy accident is shedding light on the formation of our solar system, today we’re joined here at The Star Spot by the discovery team leader Scott Sheppard. Current in Space Is the universe just a simulation? Simon says maybe. Then Tony settles the question of the habitability of potential water worlds. And speaking of water, Dave ponders the origin of our own planet’s H20. About Our Guest Scott Sheppard is faculty member in the Department of Terrestrial Magnetism at the Carnegie Institution for Science. He received his PhD from the University of Hawaii. A Hubble Fellow, Sheppard is credited with the discovery of many small moons of the gas giant planets. He has also been part of teams that have discovered comets, asteroids and Kuiper belt objects.  

Dr. Michael Turner makes a “big bang” in the world of theoretical cosmology. Translation: He’s an expert on the universe—what it’s made of, what’s in its future, and how it came to be. Turner is the Rauner Distinguished Service Professor and Director of the Kavli Institute for Cosmological Physics at the University of Chicago. From 2003 until 2006, was Assistant Director for Mathematical and Physical Sciences for the National Science Foundation. He is the recipient of numerous awards and prizes, and he is a Fellow of the American Association for the Advancement of Science (AAAS). Michael Turner and Vera Rubben, who recently passed away. Turner is most well-known for having coined the phrase “dark energy” in 1998, which he calls “very, very mysterious stuff.” Thought to comprise 70 percent of the universe, dark energy is responsible for both the expansion of the universe and the increasing speed at which that expansion is occurring. Another five percent of the universe is atoms, and the remaining twenty-five percent is “dark matter”—what Turner calls “the cosmic infrastructure of the universe.” The universe, he adds, has largely “been a battle between the two dark titans: dark energy and dark matter.” “He [Turner] is able to explain the deepest issues in cosmology with a rare clarity and elegance,” says IHMC Director Ken Ford. “His research focuses on the earliest moments of creation.” With Chicago cosmologist Rocky Kolb, Turner co-wrote the well-known book “The Early Universe.” More information on Turner can be found here: https://kicp.uchicago.edu/people/profile/michael_turner.html and here: https://en.wikipedia.org/wiki/Michael_Turner_(cosmologist). Turner’s 2011 IHMC lecture, “The Dark Side of the Universe,” can be viewed here: . Turner was also a guest on STEM-Talk for an earlier episode for his interview on the discovery of gravitational waves. Turner is interviewed by regular STEM-Talk host Dawn Kernagis and guest host Tom Jones, a veteran NASA astronaut and senior research scientist at IHMC. 00:37: Ken calls Dr. Michael Turner “exactly the right guy to talk to about dark energy and dark matter. After all, he coined the phrase dark energy. He is able to explain deepest issues in cosmology with a rare clarity and elegance.” 1:04: Ken pays tribute to Vera Rubin, who passed away on Christmas Day. She confirmed the existence of dark matter and transformed modern physics and astronomy. 2:24: Ken asks for feedback on STEM-Talk and reads 5-star iTunes review from BobRXUF: “With all of the garbage we are bombarded with, listening to STEM-Talk reminds me that there is higher intelligence, the hope for mankind.” 3:35: Dawn and Ken introduce Michael and talk about his background. 4:17: Dawn and Tom welcome Michael to STEM-Talk. 4:39: Tom asks Michael to give listeners the big picture about the structure of our universe and explain how we stumbled upon the phenomenon called dark matter and dark energy? 5:14: Michael explains that a half of one percent of the universe is in the form of stars. The other 99.5 percent is dark. 6:29: Michael talks about how dark matter matter provides the cosmic infrastructure of the universe. 7:45: “Our universe,” says Michael, “has really been a battle between the two dark titans: dark energy and dark matter.” 9:49: Michael explains that’s it’s the stars that give off energy and it’s the atoms we’re made of. “We’re the tip of the iceberg. We’re the special stuff.” 10:52: “Michael talks about producing dark matter particles at the Large Hadron Collider (LHC) in Geneva, Switzerland, the world’s most powerful particle accelerator. 11:25: Tom asks Michael what was the original evidence for dark matter and dark energy and who were the people who made that discovery? 13:20: Michael describes how Vera Rubin, a scientist working at the Department of Terrestrial Magnetism at the Carnegie Institution of Washington,

Feature Guest: Scott SheppardRecently astronomers discovered an object further than anything we’ve ever found in our solar system. This dwarf planet lies all the way out in the mysterious inner oort cloud. Today the object’s co-discoverer Scott Sheppard joins guest host Denise Fong here at The Star Spot, to reveal cutting edge findings from the unmapped edges of our solar system.Current in SpaceAnuj introduces us to the CLASS telescope. Never heard of it? You will. And with everyone seemingly fascinated by Jupiter's moon Europa, Tony asks what it would take to actually explore this intriguing world. About Our GuestScott Sheppard is faculty member in the Department of Terrestrial Magnetism at the Carnegie Institution for Science. He received his PhD from the University of Hawaii. A Hubble Fellow, Sheppard is credited with the discovery of many small moons of the gas giant planets. He has also been part of teams that have discovered comets, asteroids and Kuiper belt objects.

Dr. Christelle Wauthier is an Assistant Professor in the Department of Geosciences at The Pennsylvania State University. She received a Masters Degree in Geological Engineering from the University of Liege in Belgium as well as a Masters Degree in Volcanology from the University of Blaise-Pascal in France. Christelle completed her PhD in Engineering Sciences at the University of Liege and recently finished her work as a Carnegie Postdoctoral Fellow in Terrestrial Magnetism at the Carnegie Institution of Washington. Christelle is with us today to tell us all about her journey through life and science.

Carnegie Institution for Science, carnegiescience, Carnegie Observatories, Department of Terrestrial Magnetism, exo-planets, Kapteyn’s Star, Galactic halo, Pamela Arriagada, Paul Butler, Steve Shectman, Jeff Crane, Ian Thompson, HARPS spectrometer at the European Southern Observatory's La Silla observatory, Planet Finding Spectrometer at the Magellan/Las Campanas Observatory in Chile, HIRES spectrometer at the W.M. Keck Observatory, Guillem Anglada-Escude, super-Earth, Omega Centauri

Dr. Maria T. Zuber Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences Since before the first single-celled organisms, the Moon has illuminated the night sky. Although the Moon is our nearest neighbor, it is far enough away that landing on it represented the pinnacle of human achievement. Studying the Moon helps us learn how other rocky planets formed and developed. Dr. Zuber will discuss our evolving understanding of the Moon from GRAIL, a dual-spacecraft mission that mapped the lunar interior from crust to core. Co-hosted by the Carnegie Institution for Science's Department of Terrestrial Magnetism and The National Aeronautics and Space Administration.

A new planet-hunting survey has revealed planetary candidates with orbital periods as short as four hours and so close to their host stars that they are nearly skimming the stellar surface. If confirmed, these candidates would be among the closest planets to their stars discovered so far. Brian Jackson of the Carnegie Institution for Science’s Department of Terrestrial Magnetism will present his team’s findings, which are based on data from NASA’s Kepler mission, at the American Astronomical Society’s Division of Planetary Sciences meeting.

Carbonaceous chondrites are a type of organic-rich meteorite that contain samples of the materials that took part in the creation of our planets nearly 4.6 billion years ago, including materials that were likely formed before our Solar System was created and may have been crucial to the formation of life on Earth. The complex suite of organic materials found in carbonaceous chondrites can vary substantially from meteorite to meteorite. New research from Carnegie's Department of Terrestrial Magnetism and Geophysical Laboratory shows that most of these variations are the result of hydrothermal activity that took place within a few million years of the formation of the Solar System, when the meteorites were still part of larger parent bodies, likely asteroids.

Scientists have long debated about the origin of carbon in Earth’s oldest sedimentary rocks and how it might signal the remnants of the earliest forms of life on the planet. New research by a team including five scientists from Carnegie’s Geophysical Laboratory and Department of Terrestrial Magnetism discovered that carbon samples taken from ancient Canadian rock formations are younger than the sedimentary rocks surrounding them, which were formed at least 3.8 billion years ago. Their results indicate that the carbon contained in such ancient rocks should not be assumed to be as old as the rocks, unless it can be shown to have had the same metamorphic history as the host rock