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PODCAST

SETI Live

SETI Live is a weekly production of the SETI Institute and is recorded live on stream with viewers on YouTube, Facebook, LinkedIn, X (formerly known as Twitter), and Twitch. Guests include astronomers, planetary scientists, cosmologists, and more, working on current scientific research. Founded in 1984, the SETI Institute is a non-profit, multi-disciplinary research and education organization whose mission is to lead humanity"s quest to understand the origins and prevalence of life and intelligence

science natural sciences

All Episodes

24:48

Drifting Signals: New Boundaries for Radio...

SETI Live ·

2024/01/07

In a new study published in the Astronomical Journal, researchers used the known population of exoplanets to set better thresholds for planetary effects on signals from ETIs (extraterrestrial intelligences). Megan Grace Li, a Ph.D. student at UCLA in UCLA SETI, conducted this research as a National Science Foundation Research Experience for Undergraduates intern in the Breakthrough Listen project at the Berkeley SETI Research Center. Join Megan as she chats with Beth Johnson about her work and what

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25:21

“The Big One”: The Most Powerful Marsquake Ever Detected

SETI Live ·

2024/01/06

On Earth, we understand how and where earthquakes happen due to the discovery of plate tectonics – the continental crust’s creation, movement, and destruction. However, when astronauts placed seismometers on the lunar surface during NASA’s Apollo mission era, those instruments recorded quakes on the Moon. In the 1970s, the Viking landers also recorded quakes on the surface of Mars. Since neither of these worlds has plate tectonics, scientists set about collecting more data to understand the

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30:11

Defending the Planet - DART and Future Missions

SETI Live ·

2023/12/19

The Universe is trying to kill us. We know an asteroid wiped out the dinosaurs, which was great for the rise of mammals, but how do we prevent a similar fate for humanity? Enter the Double Asteroid Redirection Test (DART) mission, NASA's first attempt at planetary defense by redirecting the orbit of an asteroid's moon. DART launched in November 2021, impacted Dimorphos in September 2022, and successfully changed the moonlet's orbit by 32 minutes. Since that successful test mission, the data from the

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34:26

Women With Impact, a conversation with SETI AIR...

SETI Live ·

2023/12/12

Look at a Moon atlas, and you’ll see a land populated with the names of philosophers, mathematicians, and astronomers. Great men like Plato, Aristarchus, Kepler, Galileo, Newton, and Planck have been immortalized by naming Moon craters after them, cementing their names in the firmament. But – what about the women? Out of the 1,578 cataloged and named craters on the lunar surface, 32 are named after women – that is barely 2%. SETI Artist in Residence Program Director Bettina Forget found this

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29:16

Evidence of (16) Psyche’s Metallic Nature Found with...

SETI Live ·

2023/12/05

Led by Anicia Arredondo, researchers used the Stratospheric Observatory for Infrared Astronomy (SOFIA) to investigate the metallic nature of the asteroid Psyche, believed to be rich in metals. SOFIA observed the entire surface of Psyche, using mid-infrared instruments to analyze its emissivity and porosity. The results confirmed that Psyche is a metallic body with some differences between the northern and southern poles. This study paves the way for NASA's mission to Psyche, launching in October

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35:25

An Abundance of Space Rocks - The OSIRIS-REx Sample...

SETI Live ·

2023/11/28

Launched on Sept. 8, 2016, the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer, or OSIRIS-REx, spacecraft traveled to a near-Earth asteroid named Bennu (formerly 1999 RQ36) and collected a sample of rocks and dust from the surface. The spacecraft flew by Earth on Sept. 24, 2023, delivering the capsule containing the sample, which landed at the Department of Defense's Utah Test and Training Range. Yesterday, NASA revealed the contents of the capsule live, and

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33:54

Volcanism on Exoplanets - New Insights from JWST and...

SETI Live ·

2023/11/21

Up until now, the quest to find evidence of active volcanism on other worlds has been limited to our own solar system. We've definitively seen volcanoes erupting on Jupiter's moon, Io; we've possibly found evidence of geologically recent volcanism on Venus; and Mars has the largest volcano, although dormant, in Olympus Mons. With the advent of the JWST era, however, more possibilities have opened up. Colby Ostberg is an astronomer at UC Riverside and the lead author of an intriguing recent study on

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31:36

Hot Spot on the Moon - Granite Batholith Found Below...

SETI Live ·

2023/11/14

The Apollo missions showed scientists that the craters on the Moon were from impacts rather than volcanoes, overturning previously held hypotheses. Now, new research using data collected by China's Chinese Chang’E 1 and 2 orbiters has discovered a hot spot under the surface. Using an instrument that made observations at microwave wavelengths, the team mapped out temperatures and found one particular suspected volcano, known as Compton-Belkovich, glowed in the microwave. However, surface evidence

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37:39

Atmospheric Results from JWST: Carbon Dioxide,...

SETI Live ·

2023/11/07

Exoplanet discoveries have been piling up faster and faster over the last decade, limiting announcements of new discoveries to the strange, unusual, and unexpected. One unexpected type of planet is the possible Hycean world -- hot, water-covered worlds with hydrogen atmospheres larger than Earth but smaller than Neptune with sizable habitable zones. With the addition of JWST's capabilities, previously discovered exoplanets are now being analyzed for their atmospheric composition, and the results are

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35:20

Out There: The Science Behind Sci-Fi Film and TV with...

SETI Live ·

2023/10/31

Ask anyone interested in space science, and you will likely also find a person influenced in some way by science fiction, whether they grew up watching Star Trek, Battlestar Galactica, Stargate, watching movies, or reading books. The genre has grown and expanded over the centuries, reflecting and inspiring changes in the world, our technology, and even our dreams of exploration. Now, Ariel Waldman - filmmaker, explorer, and former NASA advisor - has written an accessible book featuring dozens of

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36:36

The Library of the Great Silence: A conversation with...

SETI Live ·

2023/10/24

We follow up with SETI Artist in Residence Jonathon Keats about his project The Library of the Great Silence, an installation art project that addresses one of the implications of the Fermi Paradox. If the cosmos is only sparsely populated by intelligent beings that implies that at some point in their development almost all technological societies encounter a barrier they cannot cross. To counter such a dystopian prospect, Keats proposes an intergalactic lending library to research planetary

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29:04

Cosmic Enigma: The Slow-Spinning Star Mystery

SETI Live ·

2023/10/03

An enigmatic cosmic entity has been consistently beaming radio waves to Earth every 22 minutes for over three decades, perplexing the scientific community. Identified as GPM J1839−10, this celestial body is believed to be a fading star emitting energy from its poles. Yet, intriguingly, its spin is so leisurely it seems implausible for its existence, marking it both incredibly stable and unusually slow. We’re thrilled to have Natasha Hurley-Walker, the leading radio astronomer from Curtin University

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33:52

Xenopocene: The First 10,000 Days After First...

SETI Live ·

2023/09/26

SETI Artist-in-Residence (AIR) Daedelus imagines the first 10,000 days after first contact with an alien civilization and puts those imaginings to music. Daedelus calls this post-detection era the 'Xenopocene', which also serves as the title of their newly released album. In this conversation with SETI AIR Director Bettina Forget, discover Daedelus’ creative process and what inspired them during their two-year residency with the AIR program, plus listen in on this fascinating album that weaves

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48:25

Moon and Mars on Earth: Preparing for Space...

SETI Live ·

2023/09/19

Tune in to this week's SETI Live broadcast, beamed directly from Devon Island in the High Arctic. This exceptional locale serves as a remarkable analog, mirroring key environmental features of both the Moon and Mars to help prepare for their exploration. Dr. Pascal Lee and his team have embarked on their annual expedition to study the local geology and microbiology, and their relevance to the Moon and Mars. Beyond their scientific mission, they're putting spacesuits, drills, and cutting-edge

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37:50

Frontier Development Lab

SETI Live ·

2023/09/12

Frontier Development Lab (FDL) is an applied artificial intelligence (AI) research accelerator fostering collaboration among researchers, scientists, and engineers across diverse fields. FDL aims to address paramount challenges in space and Earth science through cutting-edge AI and Machine Learning applications. FDL is a collaborative effort of the SETI Institute, NASA, the Department of Energy (DoE), and prominent private sector partners. Discover the immense potential of AI for space exploration,

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33:08

Citizen Science and SN 2023ixf

SETI Live ·

2023/09/05

In an unprecedented achievement, citizen scientists have set a new record for the SETI Institute and Unistellar, comprising the highest number of observers providing data on a single event. Amateur astronomers participating in the SETI Institute’s and Unistellar’s Cosmic Cataclysms program conducted a groundbreaking observation of supernova (SN) 2023ixf. The observations, which began just one hour after the supernova’s first known appearance, have generated the longest continuous light curve of this

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32:59

Introducing FIRST: A Game-Changer in Telescope...

SETI Live ·

2023/08/29

We will present the first on-sky demonstration of the Fibered Imager foR a Single Telescope (FIRST) instrument at the Subaru Telescope. Using techniques of aperture masking and spatial filtering, FIRST combines the power of spectro-interferometry to deliver high contrast capabilities and spatial resolutions beyond the reach of traditional coronagraphic instruments. We will explain the 'pupil remapping' technique - the heart of the FIRST instrument - and its practical applications. This process

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28:25

Searching for ET at the Heart of the Milky Way

SETI Live ·

2023/08/22

If an alien civilization wanted to communicate with other civilizations throughout the Milky Way, the galaxy’s core holds potential as a strategic site for a beacon. Until now, radio SETI has primarily dedicated its efforts to the search for continuous signals. A new study sheds light on the remarkable energy efficiency of a train of pulses as a means of interstellar communication across vast distances. This marks the first-ever comprehensive endeavor to conduct in-depth searches for these signals

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32:29

Xenology, Alienness, and Trans Futures: A...

SETI Live ·

2023/08/15

Meet Adriana Knouf, our newest artist in residence! Adriana engages with topics such as wet media, space art, satellites, radio transmission, non-human encounters, queer and trans futurities, and machine learning. Join SETI AIR Director Bettina Forget and Adriana as they talk about her project TX-1, which has flown on the International Space Station, TX-2, an experiment in speculative satellite construction, and how space travel can be made more accessible to those marked as transgender. Recorded

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38:17

Pulsars Reveal Cosmic Hum

SETI Live ·

2023/08/08

Gravitational waves play a cosmic symphony as they pass through our galaxy. This week, the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) Physics Frontiers Center released the results of 15 years of data in a set of papers published in The Astrophysical Journal Letters. This research is the first evidence of gravitational waves at very low frequencies. The team, comprised of 190 scientists, transformed our region of the Milky Way Galaxy into an immense gravitational-wave

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137 results

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