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Wednesday, July 29, 2015

UCDs: Crowded galaxies

M60-UCD1    (Photo from Hubble Telescope)
If you’ve ever been to Times Square on New Year’s Eve, then you surely know what human crowds are like.

Intensify that to the nth degree, and you might have some idea of what star crowds are like.

George Dvorsky of io9 reports that astronomers have now discovered a “new class of freakishly dense,compact galaxies.”

The stellar density within these “Ultracompact Dwarfs” (UCDs) is up to “a million times greater” than it is within our own night sky.

In the brightest-known UCD, named M85-HCC1, the typical distance between stars is 100 times less than the distance between stars in Earth’s galactic neighborhood.

One explanation for such extreme density is that UCDs  were once part of larger galaxies.  Scientists theorize that their “fluffy outer parts” were somehow stripped away (perhaps by even bigger nearby galaxies), leaving only the denser parts behind. 


Copyright July 29, 2015 by Linda Van Slyke   All Rights Reserved

1 comment:


    1 Peter 3:21 The like figure whereunto even baptism doth also now save us (not the putting away of the filth of the flesh, but the answer of a good conscience toward God,) by the resurrection of Jesus Christ:(KJB)

    The Bible says baptism doth now save us the resurrection of Jesus Christ.

    Faith alone advocates say baptism has nothing to do with salvation. They say it is a simple act of obedience.

    1 Peter 3:21 Baptism, which is like that water, now saves you. Baptism doesn't save by removing dirt from the body. Rather, baptism is a request to God for a clear conscience. It saves you through Jesus Christ, who came back from death to life.(God's Word Translation)

    The Bible says saves you.
    The Bible says baptism is a request to God for a clear conscience.

    Faith only proponents say water baptism has nothing to do with salvation. They say baptism is only essential in order to join a denominational church.

    Faith only enthusiasts proclaim that baptism does not save, but is only a testimony of faith to the community.

    Faith only defenders state that men can get to heaven without being baptized in water, however they cannot join the local church without baptism.

    Mark 16:16 Whoever believes and is baptized will be saved, but whoever does not believe will be condemned.(English Standard Version)

    Jesus said whoever is baptized will be saved. Will be, is future tense not past tense. Will be saved does not mean has already been saved.

    Faith only champions say men are baptized because their sins have already been forgiven.