Galaxies How do we get such beautiful, ornate, and symmetrical shapes of galaxies — pinwheels, ovals, spirals, and central bars — when the same gravitational forces are at work as those that affect Earth and the Sun’s other planets?
Deep-Sky Objects, Galaxies Ptolemy’s Cluster (M7), globular cluster M14, and the Draco Dwarf (UGC 10822)
Cosmology, Galaxies Scientists size up universe’s most lightweight dwarf galaxy with Keck Observatory
Deep-Sky Objects, Galaxies The Butterfly Cluster (M6), globular cluster M107, and spiral galaxy NGC 6207
Galaxies Besides computer simulations, what evidence do astronomers have to support the popular hypothesis that elliptical galaxies form from merging spirals?
