Question

what is a quasar? how does it look like

Answer 1

This Is What a Quasar Looks Like. The mysterious celestial objects called quasars are some of the brightest objects in our universe. Quasars are actually galaxies with powerful black holes at their centers, sucking in matter and spitting out gouts of x-rays that create a massive, broiling-hot cloud

Answer 2

Shining so brightly that they eclipse the ancient galaxies that contain them, quasars are distant objects powered by black holes a billion times as massive as our sun. These powerful dynamos have fascinated astronomers since their discovery half a century ago.

In the 1930s, Karl Jansky, a physicist with Bell Telephone Laboratories, discovered that the static interference on transatlantic phone lines was coming from the Milky Way. By the 1950s, astronomers were using radio telescopes to probe the heavens, and pairing their signals with visible examinations of the heavens.

However, some of the smaller point-source objects didn't have a match. Astronomers called them "quasi-stellar radio sources," or "quasars," because the signals came from one place, like a star. However, the name is a misnomer; according to the National Astronomical Observatory of Japan, only about 10 percent of quasars emit strong radio waves.

Naming them didn't help determine what these objects were. It took years of study to realize that these distant specks, which seemed to indicate stars, are created by particles accelerated at velocities approaching the speed of light.

"Quasars are among the brightest and most distant known celestial objects and are crucial to understanding the early universe," astronomer Bram Venemans of the Max Planck Institute for Astronomy in Germany said in a statement.