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    Astronomy

    Universe Today Podcast

    Public feed with [Space Bites+], [Q&A+], [Interview+] and other episodes. Free for everyone.

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    Copyright: © Copyright Fraser Cain

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    Latest Episodes:
    Episode 697: Interview: Theoretical Physicist Dr. Peter Woit Nov 16, 2020
    Show notes

    Dr. Peter Woit is a theoretical physicist and senior lecturer in the math department at Columbia University. He's a critic of string theory, wrote a book called "Not Even Wrong" and maintains a blog of the same name.

    http://www.math.columbia.edu/~woit/wordpress/

    Our Book is out!
    https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

    Audio Podcast version:
    ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2
    RSS: https://www.universetoday.com/audio

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    https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

    Weekly email newsletter:
    https://www.universetoday.com/newsletter

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    https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

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    Support us at: https://www.patreon.com/universetoday
    More stories at: https://www.universetoday.com/
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    Team: Fraser Cain - @fcain / frasercain@gmail.com
    Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw
    Chad Weber - weber.chad@gmail.com

    Support Universe Today Podcast

    Episode 696: Open Space 94: Is It Realistic to Declare a "Free Mars"? And More... Nov 10, 2020
    Show notes

    In this week's live QA, I talk about Elon Musk's hope of establishing a free Mars, the future of gravitational wave detectors, and what do I think about trying to live in other places in the Solar System?

    00:00:00 Start
    00:03:00 Thoughts on Bridenstine leaving NASA?
    00:08:10 Should we declare a Free Mars?
    00:11:43 How sensitive will gravitational wave detectors become?
    00:17:05 More damage at Arecibo
    00:19:20 Why is the Moon the same visual size as the Sun?
    00:22:02 Are white holes real?
    00:25:48 Any hard sci-fi
    00:28:30 Why doesn't Elon talk about nuclear propulsion or artificial gravity?
    00:31:03 Why is artificial gravity research so expensive?
    00:33:00 What's going to happen with Artemis?
    00:37:33 What do I think about GPT-3?
    00:42:43 Could we live on Venus?
    00:48:00 Give Venus an artificial satellite?
    00:49:22 Would Mercury be better to live on?
    00:51:00 What is the Great Attractor?
    00:52:27 Is Titan the best?
    00:53:16 Live underground on Venus?
    00:55:00 Is Mercury a good source of metals?
    00:55:56 Could we terraform Ceres?
    00:58:15 How close can planets get to their star?

    Support Universe Today Podcast

    Episode 695: Q&A 130: Does the Dark Forest Explain the Fermi Paradox? And More... Nov 02, 2020
    Show notes

    In this week's questions show, I talk about the Dark Forest theory in the Three-Body Problem series of books. Is it a compelling answer to the Fermi Paradox? How much of a risk is dust to interstellar travel? Is black hole evaporation negated by black holes absorbing additional material and energy?

    00:00 Start
    00:46 Is the Dark Forest a reasonable answer to the Fermi Paradox?
    04:05 How much dust is in interstellar space?
    05:57 Can we go faster than the Voyagers?
    08:24 Are black holes gaining mass faster than they're evaporating?
    10:07 Is abiogenesis happening right now?
    13:47 How do we calculate the habitable zones around other stars?
    15:45 How close can binary stars be and still be habitable?
    17:50 Could we find debris in the Lagrange Points?
    19:27 Can gravitational waves let us see past the CMB?
    22:07 What is a galactic halo?
    23:49 Are there gas dwarfs?

    Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

    Our Book is out!
    https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

    Audio Podcast version:
    ITunes: https://podcasts.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2
    RSS: https://www.universetoday.com/audio

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    https://www.universetoday.com/newsletter

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    https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

    Support us at https://www.patreon.com/universetoday
    More stories at https://www.universetoday.com/
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    Team: Fraser Cain - @fcain / frasercain@gmail.com
    Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw
    Chad Weber - weber.chad@gmail.com

    Support Universe Today Podcast

    Episode 694: Interview: Fred Watson, Australia's Astronomer at Large Oct 27, 2020
    Show notes

    https://www.darkskytraveller.com.au/fredwatson

    Space Nuts Podcast
    https://podcasts.apple.com/ca/podcast/space-nuts-astronomy-space-and-science-news/id1080090608

    Our Book is out!
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    ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2
    RSS: https://www.universetoday.com/audio

    What Fraser's Watching Playlist:
    https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

    Weekly email newsletter:
    https://www.universetoday.com/newsletter

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    Support us at: https://www.patreon.com/universetoday
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    Chad Weber - weber.chad@gmail.com

    Support Universe Today Podcast

    Episode 693: Open Space 92: Why I Hate Embargoed News Stories, and More... Oct 27, 2020
    Show notes

    00:00:00 Start
    00:04:10 Searching for exomoons
    00:07:35 Why I hate embargoes
    00:11:29 Discovery of water on the Moon
    00:17:00 Could Spitzer target the Moon?
    00:17:30 Would Jupiter's magnetosphere protect you?
    00:20:56 Any space telescopes for Starship?
    00:26:27 Cost of a replacement James Webb?
    00:27:45 Do you need gravitational assists to go to the outer Solar System?
    00:30:49 Is Juno still flying?
    00:31:17 When will Starship do its next hop?
    00:32:35 Could you have a world made entirely of water?
    00:36:05 Will amateurs be able to use Gaia?
    00:38:16 What's the impact of James Webb on other missions?
    00:43:26 How can small businesses work with NASA?
    00:47:00 Quantum foam particles.
    00:48:40 What are the most habitable stars?
    00:52:36 Does nothingness exist?
    00:55:10 What does it mean that the Universe is expanding?

    Our Book is out!
    https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

    Audio Podcast version:
    ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2
    RSS: https://www.universetoday.com/audio

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    Support us at: https://www.patreon.com/universetoday
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    Team: Fraser Cain - @fcain / frasercain@gmail.com
    Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw
    Chad Weber - weber.chad@gmail.com

    Support Universe Today Podcast

    Episode 692: Open Space 91: Any Updates on Venus? And More... Oct 22, 2020
    Show notes

    00:00 Start
    05:54 Have we learned any more about Venus?
    08:31 Elon Musk interview with the Mars Society
    11:15 How small would Earth be as a black hole?
    11:31 Could space be infinite at the Big Bang?
    13:57 Will we mine the Moon for Helium 3?
    17:08 How does inflation improve the Big Bang?
    23:22 Why didn't the Universe collapse again?
    27:03 OSIRIS-REx update
    28:17 Could you turn condensed light into matter?
    30:11 Will the magnetic reversal be devastating?
    32:35 How can you have atmospheric pressure without a container?
    33:45 What will Starship land on?
    34:47 Will it cost more than a ton of gold to bring gold back from the Moon.
    36:20 Why do I think multicellular life is rare?
    41:47 Starfleet or Space Force?
    42:38 Would there be a Universe without us to observe it?
    44:27 What rocket launch do I want to see?
    45:39 What's the difference between the SpaceX suits and the shuttle suits?
    47:43 Will the first person on Mars be Chinese?
    49:23 Could we start building our Dyson Sphere now?
    51:37 Are there any full views of the Earth from satellites?
    54:47 Have any black holes evaporated yet?
    55:45 Is interstellar space cold or hot?
    56:59 Could you use the transit method to communicate between stars?
    58:32 Is Planet 9 a black hole?

    Our Book is out!
    https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

    Audio Podcast version:
    ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2
    RSS: https://www.universetoday.com/audio

    What Fraser's Watching Playlist:
    https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

    Weekly email newsletter:
    https://www.universetoday.com/newsletter

    Weekly Space Hangout:
    https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

    Astronomy Cast:
    https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

    Support us at: https://www.patreon.com/universetoday
    More stories at: https://www.universetoday.com/
    Twitch: https://twitch.tv/fcain
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    Like us on Facebook: https://www.facebook.com/universetoday
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    Team: Fraser Cain - @fcain / frasercain@gmail.com
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    Chad Weber - weber.chad@gmail.com

    Support Universe Today Podcast

    Episode 691: Interview: Seth Shostak from the SETI Institute Oct 14, 2020
    Show notes

    This week I'll be talking Dr. Seth Shostak from the SETI Institute about his work searching the Universe for evidence of extraterrestrials.

    Our Book is out!
    https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

    Audio Podcast version:
    ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2
    RSS: https://www.universetoday.com/audio

    What Fraser's Watching Playlist:
    https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

    Weekly email newsletter:
    https://www.universetoday.com/newsletter

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    https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

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    https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

    Support us at: https://www.patreon.com/universetoday
    More stories at: https://www.universetoday.com/
    Twitch: https://twitch.tv/fcain
    Follow us on Twitter: @universetoday
    Like us on Facebook: https://www.facebook.com/universetoday
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    Team: Fraser Cain - @fcain / frasercain@gmail.com
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    Chad Weber - weber.chad@gmail.com

    Support Universe Today Podcast

    Episode 690: The Opposition of Mars with Ralph Crewe Oct 14, 2020
    Show notes

    Support Universe Today Podcast

    Episode 689: Open Space 90: Could We Drill for Life on Mars? And More... Oct 06, 2020
    Show notes

    In this week's live questions show, I answer questions about drilling for microbes on Mars, missions that could survive the surface of Venus, and if anyone else is dissatisfied with the Big Bang.

    00:00 Start
    04:18 Any updates on the Chinese mission to Mars?
    05:41 How many exoplanets are confirmed?
    07:18 Can any rovers drill for microbes?
    10:31 Any ways to survive the surface of Venus?
    13:10 How do you know if an exoplanet has cleared its path?
    15:31 Is anyone dissatisfied with the Big Bang?
    19:50 Favorite solution to Planet 9?
    21:48 When did I start getting interested in space?
    22:55 How likely is the Venus phosphine abiotic?
    27:45 How intense is the radiation field at Jupiter?
    28:54 Will I ever stream video games?
    34:03 Could we detect planets in the Magellanic Clouds
    36:13 Would would life be like near a black hole?
    38:40 How many launches have I seen?
    41:50 Is quantum mechanics a big hoax?
    42:35 Good targets for astrophotography?
    44:04 Raised by Wolves?
    45:02 Are we living in a black hole?
    45:31 When will there be lunar tourism?
    45:60 Have I read Artemis?
    47:20 Is the Universe computable?
    47:41 How can the Universe expand faster than the speed of light?
    50:00 Why is the Moon drifting away from us?
    52:00 Do we know how fast the Universe is expanding?
    53:17 Do Mercury and Venus pass in front of the Sun?
    54:35 Most significant scientific advance in the last 20 years?
    55:43 Is the expansion rate different in the Universe?
    58:10 Will we screw up the climate permanently?
    59:43 Wrap up

    Our Book is out!
    https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

    Audio Podcast version:
    ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2
    RSS: https://www.universetoday.com/audio

    What Fraser's Watching Playlist:
    https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

    Weekly email newsletter:
    https://www.universetoday.com/newsletter

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    https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

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    https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

    Support us at: https://www.patreon.com/universetoday
    More stories at: https://www.universetoday.com/
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    Like us on Facebook: https://www.facebook.com/universetoday
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    Team: Fraser Cain - @fcain / frasercain@gmail.com
    Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw
    Chad Weber - weber.chad@gmail.com

    Support Universe Today Podcast

    Episode 688: Remnants From the Early Universe. Primordial Black Holes Oct 02, 2020
    Show notes

    Black holes are already mind-bending enough. Matter and energy compressed into a region so dense that the escape velocity exceeds the speed of light. Places where space and time are tangled up so much that even if you could go faster than light speed, you’d still end up at the singularity.

    Astronomers know of two kinds of black holes in the Universe: stellar mass and supermassive, and how we get them have been worked out pretty well.

    But there’s a third class of black hole, one which has never been observed nor detected indirectly, and yet it could explain some of the mysteries of the Universe, including the nature of dark matter.

    Primordial black holes.

    Our Book is out!
    https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

    Audio Podcast version:
    ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2
    RSS: https://www.universetoday.com/audio

    Weekly email newsletter:
    https://www.universetoday.com/newsletter

    Weekly Space Hangout:
    https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

    Astronomy Cast:
    https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

    Support us at https://www.patreon.com/universetoday
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    Instagram - https://instagram.com/universetoday

    Team: Fraser Cain - @fcain / frasercain@gmail.com
    Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw
    Chad Weber - weber.chad@gmail.com

    References:
    https://www.omnicalculator.com/physics/schwarzschild-radius
    https://phys.org/news/2020-01-primordial-black-holes.html
    https://www.nasa.gov/feature/goddard/2016/nasa-scientist-suggests-possible-link-between-primordial-black-holes-and-dark-matter
    https://arxiv.org/pdf/1908.05403.pdf
    https://arxiv.org/abs/1909.01620
    https://news.northwestern.edu/stories/2020/09/scientists-detect-first-of-its-kind-intermediate-mass-black-hole-gravitational-waves/
    https://arxiv.org/abs/2003.10455
    https://phys.org/news/2020-07-scientists-planet-primordial-black-hole.html
    https://arxiv.org/search/?query=primordial+black+holes&searchtype=all&source=header
    https://www.youtube.com/watch?v=E_7iDe5KYFU

    Support Universe Today Podcast

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