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Old March 22nd 17, 09:18 AM posted to sci.astro
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Default THEORICAL-PRACTICAL huge QUESTION

Il giorno martedì 21 marzo 2017 15:46:10 UTC+1, dlzc ha scritto:
Dear old...:

On Tuesday, March 21, 2017 at 2:08:19 AM UTC-7, wrote:
..the theorical acceleration is the change of speed
and this measure is given in the SI ( international
with m/s^2 ... or m/s/s


Sure. Units, ignoring the vector component.

.. the anomal misterious acceleration of Pioneer
10-11 is given with 8.7*10^-8 cm/s^2


Yes, "vector component" is "Sunward", or anti-Universal-expansion, since the Earth is also "Sunward".

.. the acceleration of the BigBang ( Hubble Constant)
is given with 67 Km/s /Mpc or 20 Km/s/My.l. ...


Also 1 part in 10^18, with each passing second... either distance increase, or duration decrease (each second is missing 1 part, then 2 parts, then 3 parts, then...).

NB.: why the change of speed in BB has the Mpc,
that is not a time quantity the distance made by
the light in 3.2 Millions years ?


Because the "Hubble constant" is a velocity, and does not address the acceleration that began 1.1 billion years ago.

PS.: the anomal acceleration of Pioneers and the
BB' acceleration are , in absoute value , very
similar ?


Ignoring the sign / vector, and ignoring one is an acceleration and the other a speed, not really.

So is the lunar recession rate (which at least has the correct sign and units), but it is about double the magnitude of expansion, and is ENTIRELY due to momentum transfer from Earth.

Expansion is not detectable within bound systems, the largest bound system being (for us) the Virgo Supercluster.

http://www.astro.ucla.edu/~wright/cosmology_faq.html#SS

David A. Smith


...thanks for your specifications ...so i modify ,a little , the second part of premises .. : supposed that the evidence of the increasing speed (connected to the increasing universal distances ) could come from a kind of acceleration ... Has that acceleration the same absolute value of the misterious (?) acceleration of Pioneer 10-11 ?