Re: Two questions




"CeeBee" <ceebeechester@xxxxxxxxxxxx> wrote in message
news:Xns964FE94A76107ceebeechesterstartco@xxxxxxxxxxxxxxx
> Bjoern Feuerbacher <feuerbac@xxxxxxxxxxxxxxxxxxxxxxxx> wrote in
> sci.astro:
>
>
> > The Hubble parameter is about 72 km/s/Mpc, which is equal to
> > about 2.3 * 10^(-18) 1/s. H is the relative expansion rate,
> > i.e. Rdot/R. If we assumed this for the Earth, we get about
> > Rdot = 1.5 * 10^(-14) km/s (with R = 6380 km), i.e. in
> > 1 million years, R would increase by about 0.47 km. Not that
> > much...
>
>
> Is that so?

No it isn't so, but the OP asked 'If. . . . ' and Bjoern answered on
that basis.


.



Relevant Pages

  • Re: space?
    ... > Bjoern Feuerbacher wrote: ... > Born-yesterday doesn't understand the question ... keep walking, driving, sailing, over the surface forever. ... Imagine a 2-d object living on the surface a globe like the Earth. ...
    (sci.physics)
  • Re: negative energy
    ... "Dnlzmmr" wrote in message ... > Bjoern Feuerbacher wrote ... >>to that on the earth. ... spacecraft would have been out of whack. ...
    (sci.physics)
  • Re: origin of inertia
    ... > Bjoern Feuerbacher wrote: ... > Sorry, that integration was over simplified, ... try using more sophiscated language. ... what do *you* think why I asked you why on earth you ...
    (sci.physics.relativity)
  • Re: origin of inertia
    ... > Bjoern Feuerbacher wrote: ... > Sorry, that integration was over simplified, ... try using more sophiscated language. ... what do *you* think why I asked you why on earth you ...
    (sci.physics)
  • Re: Two questions
    ... i.e. Rdot/R. ... I thought current theory assumed local gravitational forces outweigh the force responsible for the expansion of space, making objects not stretching out and keeping local systems together. ... Earth expanded at the same rate as the universe, ...
    (sci.astro)