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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

26:50

Looking for Life in All the Wrong Places: The...

SETI Live ·

2024/10/29

In 1976, NASA's two Viking spacecraft touched down on Mars, becoming the first successful landers on the red planet. On board Viking 1, the craft carried several biological experiments to search for life. While most scientists consider the results of those experiments to be negative for Martian life, one experiment gave a positive result. The resulting controversy has spanned decades, with numerous scientists weighing in. Now, Dirk Schulze-Makuch from the Centre of Astronomy and Astrophysics (ZAA)

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33:02

The Non Random Arts Collective: Exploring...

SETI Live ·

2024/10/22

Suppose global warming raised temperatures so drastically that crops failed and caused world hunger. Would you support the idea of gene editing humans’ skin cells so that photosynthesis would become an alternative source of human nutrition? The Non Random Arts Collective, part of the SETI Institute’s Artist in Residence (AIR) program, explores fascinating scenarios connecting climate change, habitability, and gene editing. SETI AIR Director Bettina Forget chats with the collective about their GAIA

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37:02

Naked Eye Comets? October May Yield a Bounty

SETI Live ·

2024/10/08

Comets are small objects in our solar system made of ice and dust. As they get closer to the Sun in their orbits, the ices turn into gas and give off a glow that can be seen in telescopes. With luck, that glow brightens to the point where a comet can be seen with the unaided eye. Some, like Halley's Comet, return on a regular schedule. Others are more one and done, breaking apart as they near the Sun or getting a gravity assist to leave our solar system. And every year, astronomers hope for the

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38:45

New Exoplanets Just Dropped! And Citizen Scientists...

SETI Live ·

2024/10/01

Exoplanets are planets that orbit stars outside our solar system. We've been finding potential exoplanets more often since the Kepler and TESS spacecraft were launched. But confirming these planets takes time, and telescope time is limited. To speed up the process, amateur astronomers are using their own telescopes. One program, called UNITE (Unistellar Network Investigating TESS Exoplanets), brings together a global group of volunteer and professional astronomers. They use Unistellar telescopes to

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36:24

Europa Clipper is Go! Mission Passes Milestone Toward...

SETI Live ·

2024/09/24

In the quest to find life beyond Earth, icy worlds within our solar system are full of potential. Europa, one of Jupiter's four largest (Galilean) moons, is one possible target because of the vast ocean beneath its icy shell. That ocean, heated by the push and pull of Jupiter, could contain life. The Europa Clipper mission will send a spacecraft to the distant moon, and the spacecraft's instruments will determine if the conditions truly are suitable. This week, NASA announced that Europa Clipper

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35:26

Finally! An Intermediate-Mass Black Hole

SETI Live ·

2024/09/17

There are supermassive black holes. There are stellar mass black holes. And based on the idea that galaxies evolve as they merge, there should be black holes in between -- intermediate mass black holes. However, finding these middle-of-the-road beasts has been difficult. Now, a new paper in Nature identifies the first ever mid-size sedan in a universe of compact cars and SUVs. This black hole resides in the center of the Omega Centauri star cluster, which is thought to be the core of a galaxy that

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36:11

Hot, Young Supernova Remnant! JWST Observations of...

SETI Live ·

2024/09/10

When a star at its life's end explodes, a debris cloud expands away from the now-dead star. The debris forms intricate and amazing structures in the expanding cloud and can cause the formation of a variety of molecules. Using the James Webb Space Telescope, scientists have collected information regarding Cassiopeia A (Cas A), the youngest known supernova remnant in the Milky Way. The observations shed light on how molecules and dust form and are destroyed in the aftermath of an explosion. These

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35:04

Pollution on Exoplanets? Using Greenhouse Gases as...

SETI Live ·

2024/09/03

Scientists now can work out what the atmospheres of worlds outside our solar system are made of. Using the James Webb Space Telescope, we have seen water, carbon dioxide, methane, and other gases. Could we, from this distance, know how those gases formed? Possibly. Looking for planets with signs of being intentionally changed - terraforming - would give us proof of an advanced civilization, and a new paper explores just how the investigation process would work. Senior astronomer Franck Marchis talks

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29:43

55 Cancri e: A Rocky World with a Thick Atmosphere...

SETI Live ·

2024/08/27

A super-Earth in a distant star system may explain what Mars, Venus, and Earth were like billions of years ago -- incredibly hot and covered in magma oceans. Those oceans may have supplied the planets with early atmospheres full of gases needed for life. While Venus's atmosphere became thick and heavy and Mars couldn't hold on to its atmosphere, Earth became a truly habitable world where life thrives. What can 55 Cancri e, over 40 light years away, teach us about our early solar system? Planetary

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33:18

The Secret Life of the Universe with Nathalie Cabrol

SETI Live ·

2024/08/20

"The Secret Life of the Universe" by Dr. Nathalie Cabrol, the SETI Institute's chief scientist and Director of the Carl Sagan Center at the SETI Institute, is coming out this week, both in the US (August 13, 2024) and in the UK (August 15, 2024). Scriber/Simon & Schuster publishes both editions. Cabrol articulates an overview of where we stand today in our search for life in the universe, what's coming, and how looking out for life beyond Earth teaches us about our place on our planet. Nathalie

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55:35

The Future of AI & Space Science with CEO Bill Diamond

SETI Live ·

2024/08/13

Join SETI Institute CEO Bill Diamond as he explores NASA's AI-driven mission planning, data analysis, and anomaly detection. Since 2015, the SETI Institute’s Frontier Development Lab (FDL) has partnered with NASA, using machine learning (ML) to classify data, predict outcomes, and uncover trends. With FDL's support, ML tools automate tasks, streamline decision-making, save resources, and maximize NASA's science data potential. Guests will be Megan Ansdell, Program Officer in the Planetary Science

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33:54

Black Hole Awakens ft. Dr. Paula Sánchez-Sáez

SETI Live ·

2024/08/06

In late 2019, an unremarkable galaxy with the catalog number SDSS1335+0728 suddenly started shining brighter than ever. Curious as to why, astronomers used data from space and ground-based observatories to track changes in the galaxy’s brightness and concluded that we are witnessing the sudden awakening of the massive black hole at the galaxy's core. The results were published in Astronomy & Astrophysics in June 2024 with lead author Paula Sánchez Sáez, an astronomer at the European Southern

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30:02

The Shores of Titan: Crashing Waves and Coastal...

SETI Live ·

2024/07/23

Imagine standing on the shore of a vast lake, watching the waves crash against the beach after a storm. Now put that beach on Saturn's largest moon, Titan, where the lakes contain liquid methane and ethane. Perhaps do not imagine yourself there after all, but enjoy the thought that even with the unfamiliar and hazardous contents, lakes on Titan are shaped by the same processes as lakes on Earth - crashing waves cause coastal erosion. Such is the discovery in new work published in Science Advances

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28:40

Gliese 12 b: A Promising Earth-to-Venus-Sized Exoplanet

SETI Live ·

2024/07/16

When scientists found the first exoplanets over 30 years ago, the discovery defied all expectations. In the following decades, with the advent of NASA's Kepler and TESS missions and numerous ground-based observatories, the exoplanet count has risen to nearly 6,000 confirmed worlds and some 7,200 candidates. Press releases on newly confirmed planets tend to be about exciting or strange places, and this week's SETI Live is no exception. Discovered in TESS data, Gliese 12 b is a recently confirmed

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32:01

More Active Volcanoes on Venus!: A New Archival Study...

SETI Live ·

2024/07/03

In 2023, scientists analyzed archival data from NASA's Magellan mission, which mapped the surface of our "twin" planet, Venus. They discovered evidence of a recent volcanic eruption on the world's surface by comparing the Magellan images over time. Now, a team of Italian scientists has found evidence for two more eruptions during Magellan's observations. Published in Nature Astronomy, this new research could help us understand why Venus took a different path in planetary evolution and provides some

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43:03

Alien Earths: The New Science of Planet Hunting in...

SETI Live ·

2024/06/25

Are we alone? This question continues to tantalize and mystify scientists and the public alike, wondering if Earth contains not only the one known sample of life in the Universe but also the ONLY life in the Universe. In her new book, Alien Earths, astrophysicist Lisa Kaltenegger (founding director of Cornell University's Carl Sagan Institute) "demonstrates how we can use our homeworld as a Rosetta Stone, creatively analyzing Earth's history and its astonishing biosphere" to inform our search for

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18:30

Asteroid Institute Identifies 27,500 New Asteroids!

SETI Live ·

2024/06/18

In a collaboration between the Asteroid Institute and Google Cloud, machine learning algorithms identified 27,500 new asteroids using existing data sets from the NOIRLab Source Catalog Data Release 2 (NSC DR2). While most of the asteroids are in the main belt between Mars and Jupiter, more than 100 are considered Near-Earth Asteroids. Developed by the Asteroid Institute, the algorithm is called Tracklet-less Heliocentric Orbit Recovery (THOR), and it "projects theoretical orbits across millions of

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30:55

James Webb Telescope Unveils Wild Weather on WASP-43 b

SETI Live ·

2024/06/11

Scientists have used NASA’s James Webb Space Telescope to map the weather on the hot gas-giant exoplanet, WASP-43 b. Through precise measurements of mid-infrared light and advanced 3D climate models, they've discovered some fascinating details: thick, high clouds cover the nightside; clear skies dominate the dayside; and equatorial winds race at speeds up to 8,000 kilometers per hour, mixing atmospheric gases around the planet. This breakthrough showcases JWST's incredible ability to measure

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34:57

Exploring Hydrothermal Vents: Earth's Deep Ocean as a...

SETI Live ·

2024/06/04

The INVADER project researches ways to improve life detection in ocean worlds by studying alien worlds in Earth’s deep ocean. We seek to understand how we can detect life in the deep ocean here on Earth with flight-ready instruments (e.g., can go on a space flight mission). The deep ocean is a testing ground to help us validate what data collected by these instruments could tell us about life if we deployed them to the seafloor of an ocean world. To this end, in 2021, Laura Rodriguez (LPI) and Pablo

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29:16

Celebrating Andrew Siemion, Drake Award Recipient...

SETI Live ·

2024/05/28

The SETI Institute is pleased to announce that Dr. Andrew Siemion will be honored with the prestigious 2024 Drake Award for his exceptional and pioneering contributions to SETI and radio astronomy and his leadership in the field. Siemion's distinguished career includes his role as the Bernard M. Oliver Chair for SETI at the SETI Institute, Principal Investigator for the Breakthrough Listen Initiative at the University of Oxford, along with holding an Honorary Professorship at the University of

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137 results

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