galactic disc (or galactic disk) is a component of disc galaxies, such as spiral galaxies like the Milky Way and lenticular galaxies. Galactic discs consist...

the center into the galactic disc. The spiral arms are sites of ongoing star formation and are brighter than the surrounding disc because of the young...

A disc galaxy (or disk galaxy) is a galaxy characterized by a galactic disc. This is a flattened circular volume of stars that are mainly orbiting the...

400 ± 3,600 light-years), by assuming that the galactic disc is well represented by an exponential disc and adopting a central surface brightness of the...

hypothetical source of the galactic halo of coronal gas may be the cumulative output of many “galactic fountains” in the galactic disc ejecting hot gas. The...

the Gaia Sausage. Disc galaxy – Type of galactic form Galactic bulge – Tightly packed group of stars within a larger formation Galactic corona – Hot, ionised...

relation in the Galactic disc. Ultraluminous X-ray sources (ULXs): What powers X-ray sources that are not associated with active galactic nuclei but exceed...

gas surrounding it. The standard model for an active galactic nucleus is based on an accretion disc that forms around a supermassive black hole (SMBH) at...

through Cassiopeia, containing a number of open clusters, young luminous galactic disc stars, and nebulae. IC 10 is an irregular galaxy that is the closest...

process. In pass-through galactic collisions, or bullseye collisions, an often smaller galaxy will pass directly through the disc of an often larger spiral...