Flash Forward is a show about possible (and not so possible) future scenarios. What would the warranty on a sex robot look like? How would diplomacy work if we couldn’t lie? Could there ever be a fecal transplant black market? (Complicated, it wouldn’t, and yes, respectively, in case you’re curious.) Hosted and produced by award winning science journalist Rose Eveleth, each episode combines audio drama and journalism to go deep on potential tomorrows, and uncovers what those futures might re ...
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Busy Disks
Manage episode 494013606 series 178791
Content provided by McDonald Observatory and Billy Henry. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by McDonald Observatory and Billy Henry or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://player.fm/legal.
Newly forming planetary systems are busy and messy. They contain disks of gas, ice, and dust that are broken into wide bands. The supply of dust is replenished by frequent collisions between “exocomets” – balls of ice and rock up to a few miles across. And the bands may be stirred by the back-and-forth shifting of newborn planets.
There’s a similar band in our own solar system – the Kuiper Belt. It begins beyond the edge of Neptune, the outermost major planet, and extends billions of miles from the Sun. Because the solar system has been around for billions of years, the belt is quiet – there are few collisions and little stirring.
Astronomers recently studied the bands in about 300 young star systems. They contain a lot of leftover debris from the birth of the planets. So collisions between larger bodies are much more frequent. The impacts blast out a lot of dust, feeding the bands.
In many systems, there’s more than one band. Gaps between them might have been cleared out by orbiting planets. And the bands come in different sizes.
Wider ones might have been “pumped up” as giant planets moved toward and away from the parent star. The gravity of those planets would have kicked many of the exocomets into different orbits, causing them to spread out.
The study didn’t see any planets. But the configurations of the bands suggest the planets are there – taking shape in the busy space around young stars.
Script by Damond Benningfield
2922 episodes
Share
Manage episode 494013606 series 178791
Content provided by McDonald Observatory and Billy Henry. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by McDonald Observatory and Billy Henry or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://player.fm/legal.
Newly forming planetary systems are busy and messy. They contain disks of gas, ice, and dust that are broken into wide bands. The supply of dust is replenished by frequent collisions between “exocomets” – balls of ice and rock up to a few miles across. And the bands may be stirred by the back-and-forth shifting of newborn planets.
There’s a similar band in our own solar system – the Kuiper Belt. It begins beyond the edge of Neptune, the outermost major planet, and extends billions of miles from the Sun. Because the solar system has been around for billions of years, the belt is quiet – there are few collisions and little stirring.
Astronomers recently studied the bands in about 300 young star systems. They contain a lot of leftover debris from the birth of the planets. So collisions between larger bodies are much more frequent. The impacts blast out a lot of dust, feeding the bands.
In many systems, there’s more than one band. Gaps between them might have been cleared out by orbiting planets. And the bands come in different sizes.
Wider ones might have been “pumped up” as giant planets moved toward and away from the parent star. The gravity of those planets would have kicked many of the exocomets into different orbits, causing them to spread out.
The study didn’t see any planets. But the configurations of the bands suggest the planets are there – taking shape in the busy space around young stars.
Script by Damond Benningfield
2922 episodes
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Similar to StarDate
Flash Forward is a show about possible (and not so possible) future scenarios. What would the warranty on a sex robot look like? How would diplomacy work if we couldn’t lie? Could there ever be a fecal transplant black market? (Complicated, it wouldn’t, and yes, respectively, in case you’re curious.) Hosted and produced by award winning science journalist Rose Eveleth, each episode combines audio drama and journalism to go deep on potential tomorrows, and uncovers what those futures might re ...
…
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Whether the topic is popcorn or particle physics, you can count on BrainStuff to explore -- and explain -- the everyday science in the world around us.
…
continue reading
Scientists Daniel and Kelly cannot stop talking about our amazing, wonderful, weird Universe! Each episode is a fun, easy-to-understand, and in-depth explanation of topics in science, from particles to black holes to moon colonies to ecosystems to parasites and everything else in the Universe!
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