A nebula from Latin: "cloud"is an interstellar cloud of dust, hydrogen, helium and other ionized gases. Originally, nebula was a name for any diffuse astronomical object, including galaxies beyond the Milky Way.
The black hole at the center of this galaxy is part of a survey of 18 of the biggest black holes in the universe. This large elliptical galaxy is in the center of the galaxy cluster PKS which is located about billion light years from Earth.
/ NGC Trifid Nebula in Sagittarius. Its name means 'divided into 3 lobes.' The object is an unusual combination of an open cluster of stars; an emission nebula; a reflection nebula & a dark nebula about 5200 light years away.
Dusty Space Cloud This image shows the Large Magellanic Cloud galaxy in infrared light as seen by the Herschel Space Observatory, a European Space Agency-led mission with important NASA contributions, and NASA's Spitzer Space Telescope.
Intergalactic debris and far-flung atoms, shards of carbon nanomatter rounded up by gravity to circle the sun. As atoms pass through an eternal revolving door of possible form, energy and mass dance in fluid relationship.