Universe Today Audio

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Episodes

Date Title & Description Contributors
2018-01-23

  QA 42: Where Can You Escape Time Dilation? And More...

In this week's questions show, Fraser wonders where you'd have to go in the Universe to minimize your time dilation, how to see Iridium Flares, how interferometry works, and more.
2018-01-21

  338 - Which Are The Real Photos of Spacecraft?

When we see images of space, it’s hard to know which are real images and which are artist illustrations.
2018-01-11

  QA 41: Will We Ever Clear That Space Junk? and more...

In this week's questions show, Fraser wonders how we're ever going to clear all that space junk orbiting Earth, whether it's better to colonize Mars or Mercury, and can water worlds explain the Fermi Paradox?
2018-01-04

  337 - Life Beneath the Ice

Forget rocky worlds like Earth and Mars. New discoveries about icy worlds like Europa and Enceladus make them the ideal candidates for the search for life in the Universe. In fact there could be hundreds, or even thousands of times more worlds out ther...
2018-01-02

  336 - What Do We Do With Dead Spacecraft

We try to avoid thinking about it, but spacecraft are machines that break down and eventually fail. Some can last for years, others decades, but in the end they’ll be gone forever.
2017-12-19

  QA 40: When Will the Big Rip Happen and more...

In this QA episode, Fraser wonders when the Big Rip might happen, could there be binary galaxies, what it would be like to live in higher gravity.
2017-12-15

  335 - Why Did Mars Lose Its Atmosphere?

Mars is in the spotlight now, as both SpaceX and NASA are preparing their long range plans to send humans to the Red Planet. But Mars is an inhospitable environment, especially because of its tenuous and poisonous atmosphere of carbon dioxide.
2017-12-12

  334 - Interstellar Asteroid

On October 25, 2017, astronomers from NASA’s Minor Planet Center sent out an announcement that they needed help confirming the trajectory of an interesting object.
2017-12-10

  QA 39: Galactic Escape Velocity and More... Featuring Astronaut Terry Virts

In this week’s question show, Fraser explains why almost everything in the Solar System is spinning in the same direction, is there a limit to how massive black holes can get, and do galaxies have an escape velocity?
2017-12-07

  332 - Can We Protect Astronauts

Space is our future, but space is also a deadly place, with poisonous radiation and an increased risk of cancer. We’re protected here on Earth thanks to our planet’s magnetosphere, but is there a way to create an artificial magnetosphere and shield ast...