Astronomers Observe Traces Of A Galactic Dance
Our theories of how galaxies contour are tauten up . A cogitation of stars at the border of the large spiral GalaxyM81and its brightest neighbors confirm what we have seen in our own local grouping of galaxies , strengthen the possibility that large galaxies are build from the accumulation of smaller ones . Over recent years astronomers have come to privilege what is known as thehierarchical model of extragalactic nebula formation , rather than the massive model whereby coltsfoot form for the most part independently ....