Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > sci.physics > #564597 > unrolled thread

Planets Sometimes Blow Their Tops

Back to article view | Back to sci.physics

Contents

  Planets Sometimes Blow Their Tops Sam Wormley <swormley1@gmail.com> - 2016-03-22 14:14 -0500
    Re: Planets Sometimes Blow Their Tops jimp@specsol.spam.sux.com - 2016-03-22 19:20 +0000
    Re: Planets Sometimes Blow Their Tops Double-A <double-a3@hush.com> - 2016-03-22 12:49 -0700

#564597 — Planets Sometimes Blow Their Tops

Planets Sometimes Blow Their Tops
> http://www.npr.org/sections/13.7/2016/03/22/471384212/planets-sometimes-blow-their-tops


> Last Monday, I spent the day at Penn State working with James Kasting
> on how planets can lose their atmospheres into space. Kasting is a
> great scientist who has spent much of his career exploring what
> allows a planet to become habitable. In astronomy, a planet is
> habitable if liquid water can exist on its surface. To answer his
> habitability questions, Kasting uses detailed models of planetary
> atmospheres that include the absorption of sunlight, the effect of
> ozone, the action of greenhouse gases and much more.
>
> But, as Kasting will tell you, it's not just what happens inside the
> atmosphere that matters for keeping a planet safe for life.
>
> What happens high up at the border with interplanetary space can also
> make the difference between a living or dead world. That's because
> planets can bleed their atmospheres into space. This can happen
> slowly, in a trickle, or quickly when a planet blows its top in a
> powerful wind. In either case, this atmospheric evaporation can shape
> a world's long-term fate.

-- 

sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

[toc] | [next] | [standalone]

#564605

Sam Wormley <swormley1@gmail.com> wrote:
> Planets Sometimes Blow Their Tops

Yet more childish prose.

-- 
Jim Pennino

[toc] | [prev] | [next] | [standalone]

#564616

On Tuesday, March 22, 2016 at 12:14:21 PM UTC-7, Sam Wormley wrote:
> Planets Sometimes Blow Their Tops
> > http://www.npr.org/sections/13.7/2016/03/22/471384212/planets-sometimes-blow-their-tops
> 
> 
> > Last Monday, I spent the day at Penn State working with James Kasting
> > on how planets can lose their atmospheres into space. Kasting is a
> > great scientist who has spent much of his career exploring what
> > allows a planet to become habitable. In astronomy, a planet is
> > habitable if liquid water can exist on its surface. To answer his
> > habitability questions, Kasting uses detailed models of planetary
> > atmospheres that include the absorption of sunlight, the effect of
> > ozone, the action of greenhouse gases and much more.
> >
> > But, as Kasting will tell you, it's not just what happens inside the
> > atmosphere that matters for keeping a planet safe for life.
> >
> > What happens high up at the border with interplanetary space can also
> > make the difference between a living or dead world. That's because
> > planets can bleed their atmospheres into space. This can happen
> > slowly, in a trickle, or quickly when a planet blows its top in a
> > powerful wind. In either case, this atmospheric evaporation can shape
> > a world's long-term fate.


In the Earth's case it is a trickle.  Yet like Chinese water torture, in the long run it will take its toll!

Double-A

[toc] | [prev] | [standalone]

Back to top | Article view | sci.physics

csiph-web