Quasars formed in the early stages of galaxy formation.
Quasars formed in the early stages of galaxy formation.
Quasars formed in the early stages of galaxy formation.
Quasars formed in the early stages of galaxy formation.
The Quasar is considerably similar to a star, however is ultimately categorized as a Active Galactic Nuclei (AGN). It has 4 trillion times more luminosity then the sun. The only difference is it is surrounded by hot gas, therefore the heat level is not as intense as the sun.
hotter than our sun. It is predicted to be over a trillion degrees. They are hotter than hypernovas themselves!
Very old - almost as old as the Universe. Quasars were much more common in the distant past; therefore, most of the quasars we see are very far away.
Quasars formed in the early stages of galaxy formation.
The things that we observe as quasars are believed to be caused by huge black holes.
quasars
Light and radio waves.
Bright, distant, powerful, energetic, at the center of the galaxy.
quasistellar object Technically, I shall tell you a better answer than the other one!At the very edge of the visible Universe scientists can see extremely bright and powerful objects called quasars. Quasars are about the size of our Solar System and produce more light and energy than 1000 galaxies. Think how incredible that is. A small object, not any bigger than our Solar System making so much power and light that it shines brighter than 1000 galaxies. Why are there no quasars near the Earth? The most distant objects visible in the Universe When we look at quasars which are 10-15 billion light years away, we are looking 10-15 billion years into the past. The quasars near Earth have died down long ago. What could produce so much Power and light? Quasars are probably super giant black holes, which are devouring entire stars. These black holes lie at the center of galaxies, and glow brightly as matter funnels into them.
Quasars still exist.
quasars
No. Quasars are at the centers of distant galaxies.
Quasars are thought to be distant super-massive black holes.
The first quasars were discovered in the 1950's
Yes. Quasars are the size of the solar system.
Quasars do not have galaxies in them, quasars are at the hearts of galaxies. All quasars are located in galaxies, as a quasar involves massive amounts of material falling into a supermassiv black hole. Neither of these can be found outside of a galaxy.
Scientists use radio waves to study distant quasars because quasars emit large amounts of radio waves but not much visible light.
Not the existence of quasars, but the fact that all quasars are distant from us. The best explanation for what we observe when we see quasars is that they are super-massive black holes in early galaxies, burning up solar "fuel" so rapidly that they eventually run out. We do not observe any quasars near to us, so the conditions that allowed quasars to form must have existed only several billion years ago. If our Universe has not changed its basic structure and density over the last 15 billion years or so, then the conditions that would allow quasars would allow them to exist at any time over that span. This would mean that there should be just as many quasars close to us as there are far from us. But we just don't see that. As is the case with many of the things we see, this is easy to explain via Big Bang Cosmology but almost impossible to explain with any alternative.
pulsar and quasars
Not entirely - although it is believed that quasars are caused by a gigantic black hole.
Quasars are the unusual type of active galaxy in the universe.