Showing posts with label cosmology. Show all posts
Showing posts with label cosmology. Show all posts

Sunday, June 14, 2015

Big Picture Science for Monday 15 June 2015 - It's All Relative

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Big Picture Science - It's All Relative

A century ago, Albert Einstein rewrote our understanding of physics with his Theory of General Relativity. Our intuitive ideas about space, time, mass, and gravity turned out to be wrong.

Find out how this masterwork changed our understanding of how the universe works and why you can thank Einstein whenever you turn on your GPS.

Also, high-profile experiments looking for gravitational waves and for black holes will put the theories of the German genius to the test – will they pass?

And why the story of a box, a Geiger counter, and a zombie cat made Einstein and his friend Erwin Schrödinger uneasy about the quantum physics revolution.

Guests:

Permalink: http://radio.seti.org/episodes/It_s_All_Relative

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, June 07, 2015

Big Picture Science for Monday 08 June 2015 - And To Space We Return

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Big Picture Science - And To Space We Return

Earth may be the cradle of life, but our bodies are filled with materials cooked up billions of years ago in the scorching centers of stars. As Carl Sagan said, “We are all stardust.” We came from space, and some say it is to space we will return.

Discover an astronomer’s quest to track down remains of these ancient chemical kitchens. Plus, a scientist who says that it’s in our DNA to explore – and not just the nearby worlds of the solar system, but perhaps far beyond.

But would be still be human when we arrive? Hear what biological and cultural changes we might undergo in a multi-generational interstellar voyage.

Guests:

Permalink: http://radio.seti.org/episodes/And_To_Space_We_Return

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, April 26, 2015

Big Picture Science for Monday 27 April 2015 - Invisible Worlds

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Big Picture Science - Invisible Worlds

ENCORE: You can’t see it, but it’s there, whether an atom, a gravity wave, or the bottom of the ocean … but we have technology that allows us to detect what eludes our sight. When we do, whole worlds open up.

Without telescopes, asteroids become visible only three seconds before they slam into the Earth. Find out how we track them long before that happens. Also, could pulsars help us detect the gravity waves that Einstein’s theory predicts?

Plus, why string theory and parallel universes may remain just interesting ideas … the story of the woman who mapped the ocean floor … and why the disappearance of honeybees may change what you eat.

Guests:

This encore podcast was first released on September 23, 2013

Permalink: http://radio.seti.org/episodes/Invisible_Worlds

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, January 18, 2015

Big Picture Science for Monday 19 January 2015 - Big Questions Somewhat Answered

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Big Picture Science - Big Questions Somewhat Answered

Here are questions that give a cosmologist – and maybe even you – insomnia: What happened after the Big Bang? What is dark matter? Will dark energy tear the universe apart?

Let us help you catch those zzzzs. We’re going to provide answers to the biggest cosmic puzzlers of our time. Somewhat. Each question is the focus of new experiments that are either underway or in the queue.

Hear the latest results in the search for gravitational waves that would be evidence for cosmic inflation, as well as the hunt for dark matter and dark energy. And because these questions are bigger than big, we’ve enlisted cosmologist Sean Carroll as our guide to what these experiments might reveal and what it all means.

Guests:
  • Sean Carroll – Cosmologist, California Institute of Technology
  • Jamie Bock – Experimental cosmologist at the California Institute of Technology and NASA’s Jet Propulsion Laboratory and a member of the BICEP team
  • Brendan Crill – Cosmologist at NASA’s Jet Propulsion Laboratory and member of the Planck collaboration
  • Jeff Filippini – Post-doctoral Fellow, California Institute of Technology, assistant professor of physics at the University of Illinois and member of the Spider team
  • Neil Gehrels – Astrophysicist at NASA’s Goddard Space Flight Center, project scientist for WFIRST

Permalink: http://radio.seti.org/episodes/Big_Questions_Somewhat_Answered

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, September 21, 2014

Big Picture Science for Monday 22 September 2014 - As You Were

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Big Picture Science - As You Were

ENCORE: We all want to turn back time. But until we build a time machine, we’ll have to rely on a few creative approaches to capturing things as they were – and preserving them for posterity. One is upping memory storage capacity itself. Discover just how much of the past we can cram into our future archives, and whether going digital has made it all vulnerable to erasure.

Plus – scratch it and tear it – then watch this eerily-smart material revert to its undamaged self. And, what was life like pre-digital technology? We can’t remember, but one writer knows; he’s living life circa 1993 (hint: no cell phone).

Also, using stem cells to save the white rhino and other endangered species. And, the arrow of time itself – could it possibly run backwards in another universe?

Guests:

This encore podcast was first released on October 29, 2012

Permalink: http://radio.seti.org/episodes/As_You_Were

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, September 14, 2014

Big Picture Science for Monday 15 September 2014 - Skeptic Check: Is It True?

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Big Picture Science - Skeptic Check: Is It True?

We often hear fantastic scientific claims that would change everything if true. Such as the report that algae is growing on the outside of the International Space Station or that engineers have built a rocket that requires no propellant to accelerate. We examine news stories that seem too sensational to be valid, yet just might be – including whether a killer asteroid has Earth’s name on it.

Plus, a journalist investigates why people hold on to their beliefs even when the evidence is stacked hard against them – from skepticism about climate change to Holocaust denial. And, why professional skeptics are just as enamored with their beliefs as anyone else.

Guests:

Permalink: http://radio.seti.org/episodes/Skeptic_Check_Is_It_True_

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, September 07, 2014

Big Picture Science for 09/08/14 - A Sudden Change in Planets

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Big Picture Science - A Sudden Change in Planets

A planet is a planet is a planet. Unless it’s Pluto – then it’s a dwarf planet. But even then it’s a planet, according to experts. So what was behind the unpopular re-classification of Pluto by astronomers, and were they justified?

As the New Horizons spacecraft closes in on this small body, one planetary scientist says that this dwarf planet could be more typical of planets than Mars, Mercury, and Saturn. And that our solar system has not 8 or even 9 planets, but 900.

Also, meet a type of planet that’s surprisingly commonplace, although we don’t have one in our solar system: super Earths. Could they harbor life?

And the DAWN mission continues its visit to the two most massive residents of the asteroid belt: Vesta and Ceres. Discover what these proto-planets may reveal to us about the early solar system.

Guests:
  • Alan Stern – Planetary scientist, Southwest Research Institute, Principal Investigator of the New Horizons mission
  • Marc RaymanDAWN Mission chief engineer and mission director
  • David Stevenson – Professor of planetary science at CalTech
  • Rebekah Dawson – Astronomer, postdoctoral fellow at the University of California, Berkeley
  • David Eicher – Editor-in-chief, Astronomy Magazine

Permalink: http://radio.seti.org/episodes/A_Sudden_Change_in_Planets

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, August 17, 2014

Big Picture Science for 08/18/14 - Moving Right Along

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Big Picture Science - Moving Right Along

You think your life is fast-paced, but have you ever seen a bacterium swim across your countertop? You’d be surprised how fast they can move.

Find out why modeling the swirl of hurricanes takes a roomful of mathematicians and supercomputers, and how galaxies can move away from us faster than the speed of light.

Also, what happens when we try to stop the dance of atoms, cooling things down to the rock bottom temperature known as absolute zero.

And why your watch doesn’t keep the same time when you’re in a jet as when you’re at the airport. It’s all due to the fact that motion is relative, says Al Einstein.

Guests:

Permalink:  http://radio.seti.org/episodes/Moving_Right_Along

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, May 04, 2014

Big Picture Science for 05/05/14 - Skeptic Check: What, We Worry?

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Big Picture Science - Skeptic Check: What, We Worry?

We all have worries. But as trained observers, scientists learn things that can affect us all. So what troubles them, should also trouble us. From viral pandemics to the limits of empirical knowledge, find out what science scenarios give researchers insomnia.

But also, we discover which scary scenarios that preoccupy the public don’t worry the scientists at all. Despite the rumors, you needn’t fear that the Large Hadron Collider will produce black holes that could swallow the Earth.

It’s Skeptic Check, our monthly look at critical thinking … but don’t take our word for it!

Guests:
Inspiration for this episode comes from the book, What Should We Be Worried About?: Real Scenarios That Keep Scientists Up at Night edited by John Brockman.

Permalink: http://radio.seti.org/episodes/Skeptic_Check_What_We_Worry_

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, April 06, 2014

Big Picture Science for 04/07/14 - Since Sliced Bread

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Big Picture Science - Since Sliced Bread

Happy Birthday, World Wide Web! The 25-year-old Web, along with the Internet and the personal computer, are among mankind’s greatest inventions. But back then, who knew?

A techno-writer reminisces about the early days of the WWW and says he didn’t think it would ever catch on.

Also, meet an inventor who claims his innovation will leave your laptop in the dust. Has quantum computing finally arrived?

Plus, why these inventions are not as transformative as other creative biggies of history: The plow. The printing press. And… the knot?

And, why scientific discoveries may beat out technology as the most revolutionary developments of all. A new result about the Big Bang may prove as important as germ theory and the double helix.

Guests:

Permalink: http://radio.seti.org/episodes/Since_Sliced_Bread

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, February 23, 2014

Big Picture Science for 02/24/14 - Before the Big Bang

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Big Picture Science - Before the Big Bang

ENCORE: It’s one of the biggest questions you can ask: has the universe existed forever? The Big Bang is supposedly the moment it all began. But now scientists wonder if there isn’t an earlier chapter to our origin story. And maybe chapters before that!

What happened before the Big Bang? It’s the ultimate prequel.

Plus – the Big Bang as scientific story: nail biter or snoozer?

Guests
This encore podcast was first released on First released December 17, 2102

Permalink: http://radio.seti.org/episodes/Before_the_Big_Bang

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, September 22, 2013

Big Picture Science for 09/23/13 - Invisible Worlds

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Big Picture Science - Invisible Worlds

You can’t see it, but it’s there, whether an atom, a gravity wave, or the bottom of the ocean … but we have technology that allows us to detect what eludes our sight. When we do, whole worlds open up.

Without telescopes, asteroids become visible only three seconds before they slam into the Earth. Find out how we track them long before that happens. Also, could pulsars help us detect the gravity waves that Einstein’s theory predicts?

Plus, why string theory and parallel universes may remain just interesting ideas … the story of the woman who mapped the ocean floor … and why the disappearance of honeybees may change what you eat.

Guests:

Permalink: http://radio.seti.org/episodes/Invisible_Worlds

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Monday, September 02, 2013

Big Picture Science for 09/02/13 - Catch a Wave

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Big Picture Science - Catch a Wave

ENCORE: Let there be light. Otherwise we couldn’t watch a sunset or YouTube. Yet what your eye sees is but a narrow band in the electromagnetic spectrum. Shorten those light waves and you get invisible gamma radiation. Lengthen them and tune into a radio broadcast.

Discover what’s revealed about our universe as you travel along the electromagnetic spectrum. There’s the long of it: an ambitious goal to construct the world’s largest radio telescope array … and the short: a telescope that images high-energy gamma rays from black holes.

Also, the structure of the universe as seen through X-ray eyes and a physicist sings the praises of infrared light. Literally.

And, while gravity waves are not in the electromagnetic club, these ripples in spacetime could explain some of the biggest mysteries of the cosmos. But first, we have to catch them!

Guests:
  • Anil Ananthaswamy – Journalist and consultant for New Scientist in London
  • Harvey Tananbaum – Director of the Chandra X-Ray Center, located in Cambridge Massachusetts at the Smithsonian Astrophysical Observatory
  • David Reitze – Executive director of the Laser Interferometer Gravitational Wave Observatory (LIGO), California Institute of Technology
  • Albert Lazzarini – Deputy director, LIGO, California Institute of Technology
  • Alan Marscher – Professor of astronomy at Boston University

This encore podcast was first released on March 19, 2012

Permalink: http://radio.seti.org/episodes/Catch_a_Wave

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Monday, July 22, 2013

Big Picture Science for 07/22/13 - Rife with Life

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Big Picture Science - Rife with Life

ENCORE “Follow the water” is the mantra of those who search for life beyond Earth. Where there’s water, there may be life. Join us on a tour of watery solar system bodies that hold promise for biology. Dig beneath the icy shell of Jupiter’s moon Europa, and plunge into the jets of Enceladus, Saturn’s satellite.

And let’s not forget the Red Planet. Mars is rusty and dusty, but it wasn’t always a world of dry dunes. Did life once thrive here? Also, the promise of life in the exotic hydrocarbon lakes of Titan.

Science-fiction author Robert J. Sawyer joins us, and relates how these exotic outposts have prompted imaginative stories of alien life.

Guests:
  • Robert J. Sawyer – Hugo award-winning science fiction author
  • Cynthia Phillips – Planetary geologist at the SETI Institute
  • Alexander Hayes – Planetary scientist at the University of California, Berkeley
  • Rachel Mastrapa – Planetary scientist for NASA and the SETI Institute
  • Robert Lillis – Space and planetary scientist at the Space Sciences Laboratory, University of California, Berkeley

This encore podcast was first released on February 27, 2012.

Permalink: http://radio.seti.org/episodes/Rife_with_Life

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Monday, July 15, 2013

Big Picture Science for 07/15/13 - Getting a Spacelift

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Big Picture Science - Getting a Spacelift

ENCORE: I need my space… but oh, how to get there? Whether it’s a mission to Mars or an ascent to an asteroid, we explore the hows of human spaceflight. Also, the whys, as in, why send humans to the final frontier if robots are cheaper? Neil deGrasse Tyson weighs in.

Plus, the astronaut who lived on the ocean floor training for a visit to an asteroid. Also, the 100YSS – the 100 Year Starship project – and interstellar travel.

And, as private rockets nip at NASA’s heels, meet one of the first tourists to purchase a (pricey) ticket-to-ride into space.

Guests:

This encore podcast was first released on February 6, 2012.

Permalink: http://radio.seti.org/episodes/Getting_a_Spacelift

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, June 02, 2013

Big Picture Science for 06/03/13 - Cosmos: It's Big, It's Weird

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Big Picture Science - Cosmos: It's Big, It's Weird

ENCORE: It’s all about you. And you, and you, and you and you… that is, if we live in parallel universes. Imagine you doing exactly what you’re doing now, but in an infinite number of universes.

Discover the multiverse theory and why repeats aren’t limited to summer television.

Plus, the physics of riding on a light beam, and the creative analogies a New York Times science writer uses to avoid using the word “weird” to describe dark energy and other weird physics.

Also, people who concoct their own theories (some would say fringe) of the universe: is all matter made up of tiny coiled springs?

Guests:

This encore podcast was first released on January 9, 2012.

Permalink: http://radio.seti.org/episodes/Cosmos_It_s_Big_It_s_Weird

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, May 12, 2013

Big Picture Science for 05/13/13 - Fundest Show Ever

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Big Picture Science - Fundest Show Ever

You can remember yesterday, but not tomorrow. But why is that? We consider the arrow of time and why it all traces to the Big Bang. Also, artificial blood cells and life in a deep Antarctic lake.

You’ll hear how Stephen King thinks that humankind is metaphorically living under a big dome, and what reasons Neil Tyson gives for why we really want to go into space.

And … skeptical takes on faces in cheese sandwiches and the supposedly special powers of psychics.

All this and more on this special Big Picture Science podcast.

Guests:

Permalink: http://radio.seti.org/episodes/Fundest_Show_Ever

NOTE: This episode will not be available via broadcast stations. Instead the encore of "Going Viral" will be broadcast.

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, December 16, 2012

Big Picture Science for 12/17/12 - Before the Big Bang

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Big Picture Science - Before the Big Bang

It’s one of the biggest questions you can ask: has the universe existed forever? The Big Bang is supposedly the moment it all began. But now scientists wonder if there isn’t an earlier chapter to our origin story. And maybe chapters before that! What happened before the Big Bang? It’s the ultimate prequel.

Plus – the Big Bang as scientific story: nail biter or snoozer?

Guests

Permalink: http://radio.seti.org/episodes/Before_the_Big_Bang

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.


Tags:  SETI, news, podcast, cosmology, physics, culture, multiverse, universe, inflation,

Sunday, November 25, 2012

Big Picture Science for 11/26/12 - Doomsday Live, Part I

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Big Picture Science - Doomsday Live, Part I

If there is only one show you hear about the end of the world, let it be this one. Recorded before a live audience at the Computer History Museum on October 27th, 2012, this two-part special broadcast of Big Picture Science separates fact from fiction in doomsday prediction. In this episode: Maya prophesy for December 21, 2012 … asteroid impact and cosmic threats …. and alien invasion.

Presented as part of the Bay Area Science Festival.

Find out more about our guests and their work.

Guests:

Permalink: http://radio.seti.org/episodes/Doomsday_Live_Part_I

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, October 28, 2012

Big Picture Science for 10/29/12 - As You Were

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Big Picture Science - As You Were

We all want to turn back time. But until we build a time machine, we’ll have to rely on a few creative approaches to capturing things as they were – and preserving them for posterity. One is upping memory storage capacity itself. Discover just how much of the past we can cram into our future archives, and whether going digital has made it all vulnerable to erasure.

Plus – scratch it and tear it – then watch this eerily-smart material revert to its undamaged self. And, what was life like pre-digital technology? We can’t remember, but one writer knows; he’s living life circa 1993 (hint: no cell phone).

Also, using stem cells to save the white rhino and other endangered species. And, the arrow of time itself – could it possibly run backwards in another universe?

Guests:

Permalink: http://radio.seti.org/episodes/As_You_Were

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.