Around 50 million years ago, a blue dwarf galaxy shot through the center of an enormous galaxy more than twice the size of ...
which captures the intensity of light from blue to red. Astronomers call a shift to longer wavelengths a redshift. It seemed that these redshifted galaxies were all moving away from the Milky ...
About 100 years after astronomer Edwin Hubble's discovered the "magnificent" spiral nebula, the Hubble Space Telescope and NASA scientists have produced the most comprehensive survey of the Andromeda ...