Re: Do any bodies orbit beyong our galaxy and if so what gravitational

Date: Mon Jun 8 10:37:10 1998
Posted By: Brian Kane, Post-doc/Fellow, Astronomy, AstroPlace, Inc.
Area of science: Astronomy
ID: 896900845.As

Message:


Yes. Galaxies form clusters, and smaller satellite
galaxies orbit large central galaxies in these arrangements.
The mass of the large central galaxy (plus all of its
"dark matter") provides the gravity, while the primordial
momentum of the satellite galaxy provides the centrifugal
force keeping it in orbit.

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