Quasar luminosities can vary considerably over time, depending on their surroundings. Since it is difficult to fuel quasars for many billions of years, after a quasar finishes accreting the …

Developer-oriented, front-end framework with VueJS components for best-in-class high-performance, responsive websites, PWA, SSR, Mobile and Desktop apps, all from the same …

Jun 3, 2025 · Quasars occur when immense amounts of matter fall into a supermassive black hole, spiraling around it in the form of a disk before entering.

Oct 19, 2023 · Quasars are the remarkably bright cores of active galaxies in the distant universe, they are an extreme form of what astronomers call "active galactic nuclei", or AGN for short. …

Nov 14, 2025 · Quasar, an astronomical object of very high luminosity found in the centres of some galaxies and powered by gas spiraling at high velocity into an extremely large black hole.

Oct 29, 2024 · Learn what a quasar is in astronomy, how it forms, types of quasars, and what they tell us about the early universe.

Oct 17, 2025 · Many of those newfound objects were incredibly far away and therefore extremely luminous, but looked so much like stars that they were dubbed quasi-stellar radio sources, or …

Quasars are a subclass of active galactic nuclei (AGNs), extremely luminous galactic cores where gas and dust falling into a supermassive black hole emit electromagnetic radiation across the …

Oct 22, 2025 · What is a Quasar? Quasars, short for quasi-stellar radio sources, are extremely bright and distant celestial objects that emit massive amounts of energy. They are considered …

Dec 5, 2024 · Astronomers have used the unique capabilities of NASA's Hubble Space Telescope to peer closer than ever into the throat of an energetic monster black hole powering a quasar. …