# Gravitational motion transitions into universal expansion over distance

1. Jun 27, 2010

### Mechanic

I’d like to know if anyone has heard of anything along the lines in this article (abstract and link are below) before - that gravitational atractive motion sort of fades into universal expansive motion as distance increases…and how that relates to Chernin's concept of a “zero gravity shell”.

Thanks

http://rxiv.org/abs/1005.0089

Abstract
A comparison of the attractive motion experienced by masses due to gravitational interaction over relatively short distances with the recessional motion of masses at relatively large distances (that adhere to the velocity increases described by Hubble's v = Hr relation) is presented to demonstrate the similarities between the two motions. Based on the similarities of the two motions, and the observation that gravitational acceleration decreases as distance increases while recessional acceleration decreases as distance decreases the distance at which the two accelerations are equal in magnitude but in opposite directions resulting in zero net acceleration is calculated and compared to similar results provided by Chernin et al. [1]. The summation of the attractive gravitational acceleration and the recessional acceleration is presented and plotted depicting a smooth, continuous transition from gravitational attraction to universal expansion. The underlying cause of these accelerations is not addressed.

2. Jun 27, 2010

### chronon

That paper is nonsense. It starts assuming that Hubble's constant is constant over time which is wrong.

Note: This paper is deposited on the vixra.org site, which allows anyone to deposit papers, partly in protest at what is seen as censorship by arxiv.org. I've nothing against this, and am thinking of launching a similar site myself, but I think using the domain name rxiv.org is downright deceptive.

3. Jun 27, 2010

### Mechanic

Yes – the Humble’s parameter H changes with time. But treating H as a function of time would only make the some of the math a bit more cumbersome – dv/dt would be equal to H*dr/dt + r*dH/dt instead of just being eqaul to H*dr/dt - the similarities between gravitational motion and universal expansion would remain the same in that v=rH(t) would still result in an inertial accelerative expansion of some magnitude. Or would they? Maybe H(t) could vary just enough to keep v(t) constant. Any evidence of that? Or to the contrary?