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Quasars appear starlike, but each emits more energy than 100 giant galaxies. They are thought to be at the centre of galaxies, their brilliance eminating from the stars and gas falling toward an immense black hole at their nucleus.
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How many quasars are in a galaxy?
No more than one, we think. Quasars are so distant that it is difficult to distinguish details about their parent galaxies.
Can energy be produce from a black hole?
Sure; please note that black holes are among the brightest objects in the Universe. For more details, do some reading about quasars. Briefly, some quasars shine as bright as a hundred galaxies - and a quasar is a black hole.
Why are there no quasars left?
Quasars still exist.
Are quasars part of your solar system?
No. Quasars are at the centers of distant galaxies.
Does the existence of quasars support the Big Bang theory?
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.
Are quasars shiny?
They are bright maybe shiny.
Describe two key aspects of quasars?
Bright, distant, powerful, energetic, at the center of the galaxy.
How far are quasars away from us?
Quasars can be very, very, very far away. And they are extremely bright. We've seen quasars that are 12 billion light years away from Earth (a light year is how far light travels in one year, and light travels at about 128 billion kilometers a second). Most quasars are actually big, bright galaxies shining from millions, or even billions of light years away from here.
This kind of bright energy source is about the size of the solar system and is billions of light- years from earth?
Quasars
Why are spiral galaxies so bright?
The brightness of normal galaxies is mainly due to stars; quasars are believed to get most of their energy output from the black hole at their center.
How many quasars are in a galaxy?
No more than one, we think. Quasars are so distant that it is difficult to distinguish details about their parent galaxies.
Can energy be produce from a black hole?
Sure; please note that black holes are among the brightest objects in the Universe. For more details, do some reading about quasars. Briefly, some quasars shine as bright as a hundred galaxies - and a quasar is a black hole.
Why are there no quasars left?
Quasars still exist.
What is a very bright object believed to be an active center of a very young galaxy?
That probably refers to a quasar. Quasars are related to gigantic black holes.
Are distant objects in space called quarks or quasars?
quasars
Are quasars part of your solar system?
No. Quasars are at the centers of distant galaxies.
Describe how quasars got their name?
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.
