NASA’s Hubble Space Telescope reached a remarkable milestone—its 100,000th exposure, capturing an image of a quasar located 9 ...

There, bounties of cosmic matter could support the creation of such giant and luminous objects. (In fact, "a quasar’s light outshines that of all the stars in its host galaxy combined," NASA ...

will measure the speed of the galaxies’ stars so that astronomers can calculate the mass of these ultra-luminous objects. “The sky is covered with all kinds of galaxies, including those that ...

Fifty million years or so later, gravity drove the formation of the first luminous objects – stars and black holes – which ended the dark ages and initiated the cosmic dawn. These first stars likely ...

Opaque close opaqueA material, object or substance which does not allow light to pass through it. materials are substances which light cannot pass through, like stone, metal or wood. Luminous ...