Quasars are the most luminous type of active galaxy. They emit light across the electromagnetic spectrum, produce powerful ...

spiral disks and bulges, and elliptical and lenticular galaxies. Methods for determining abundances are explained in appendices. Conclusions that span the galaxy types treated here are as follows. All ...

"It's extremely rare and exciting to find a quasar-hosting galaxy with spiral arms and a black hole that is more than 400 million times the mass of the sun—which is pretty big—plus young jets ...

But astronomers scrutinizing this particular Hubble image found the central galaxy actually sports a swirl of spiral arms seemingly unruffled by any such merger, raising new questions about what ...

An international team of astronomers recently made a major discovery using the James Webb Space Telescope (JWST). They identified a giant grand-design spiral galaxy, named Zhúlóng, which could well be ...

There are three main types of galaxies: elliptical, spiral and irregular. The largest galaxies are called elliptical because they look like big globes of light emitted from a multitude of stars.

Why it's so special: This image of a spiral galaxy taken by the Hubble Space Telescope is a portrait more than two decades in the making. Like most full-color images of space objects, it's a ...

A quasar is a type of active galactic nucleus—a ... At first I was worried I had made an error," said Achenbach. This galaxy still has the spiral arms of a younger galaxy, which could affect ...

so intricately structured that it can only belong to the most spectacular category of galaxies: the grand design spiral. The galaxy's name is Zhúlóng, after the Torch Dragon of Chinese myth, and its ...