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Antigravity Matter

Interstellar and intergalactic space contains a thin atmosphere of antigravity matter


Antigravity matter can explain many features of the universe including:-

        Dark matter (and MOND). These gravitational effects are caused by a local reduction in the density of antigravity matter, not by a presence of dark matter (see right).

        The densities of Bok globules, elliptical galaxies and globular clusters.

        The shapes of galaxies - discs, cores, bars, spirals and reverse spirals, globular clusters, molecular clouds, elliptical galaxies and star forming regions.

        Pulsar kicks and the behaviour of supernova remnants.


The existence of antigravity matter has some serious implications for the galaxy lifecycle:-

        Elliptical galaxies form spiral galaxies. Spiral galaxies form elliptical galaxies. (See Simulations)

        The lifetime of a spiral galaxy is short.

        The lifetime of a globular cluster is short (even though some contain very old stars).


Antigravity matter cannot be observed directly and the closest significant density of antigravity matter is well outside the solar system. The Evidence page contains a list of observations that are indirect effects of antigravity matter. To understand how these observations are evidence the reader is encouraged to first read the Behaviour page. A step-by-step mathematical investigation is set out in the Investigation page.


The AGM Theory is not a generally accepted scientific theory. The author is an amateur scientist working in isolation. A draft paper is here:- ANTIGRAVITY MATTER. The author is grateful for any advice or feedback. This can be provided by email or via this short, anonymous survey.


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Copyright Tim E Simmons 2006 to 2017.

Originally published in 2006 at

Last updated 11th January 2017. Major changes are logged in AGM Change Log.

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