What is a quasar in astronomy?Quasar In AstronomyOur planet is about 2,000 light-years away from the closest quasar known to us. They are found in galaxies that have black holes located in their centers, which may provide them with a significant amount of energy....
An image of the Seyfert galaxy NGC 7742 in the Pegasus constellation, taken by the Hubble Space Telescope, 1998. The ring around the bright yellow core is an area of active star birth. This means that the incredibly bright light of quasars has traveled billions of years to reach us and...
If only 10% of quasars are radiofrequency emitting objects in space, what is the frequency of electromagnetic radiation that the other 90% of quasars emit that is detected here on earth? Quasar astrophysics is really a fussy science...right?? no one really knows or understands this area of...
If there is no dark matter, in order to explain our observations, our concepts of an important building block of the universe have to be incorrect. What is that building block and why do Astronomers o What is the primary source of a quasar's energy?
An artist's rendering of the double quasar, located in two merging galaxies about 10 billion light-years away(Image credit: NASA, ESA, and J. Olmsted (STScI)) Among the biggest cosmic structures we can see are galaxies, which essentially are vast collections of stars. Our own galaxy is ca...
These pieces had been absorbed by something in between the quasar and the astronomers' telescopes — this was the gas of the IGM. In the decades since, astronomers have discovered vast webs and filaments of gas and heavy elements that collectively contain more matter than all the galaxies ...
the mass around which the accretion disk is swirling must be confined to a space that is even smaller. If the quasar mechanism involves a great deal of mass, then the only astronomical object that can confine a lot of mass into a very small space is a black hole. In a few cases, it...
These pieces had been absorbed by something in between the quasar and the astronomers' telescopes — this was the gas of the IGM. In the decades since, astronomers have discovered vast webs and filaments of gas and heavy elements that collectively contain more matter than all the galaxies ...
Said quasar gives off only one flash towards us. Therefore, it is logical that our telescope would register this flash 9 billion years later due to light finite speed. Relate the argument to looking at someone turning a flashlight (quasars) in a dark forest at night (space) on and then ...
Observatoryhas been busy gathering information on cosmic phenomena such as supernovas and black holes, and will continue to do so until at least the year 2009. TheCompton Gamma Ray Observatory, in operation from 1991 to 1999, cast its lens toward solar flares, quasars and various cosmic ...