However some quasars look unperturbed, so there may be other, more subtle mechanisms for feeding the black hole. The objects typically measure only 2,000 light-years across. Astronomers also need to address a "chicken and egg" problem about the birth of quasars. However, astronomers have never directly seen galaxies form, because their formation may have happened a long time ago, or because galaxy formation is not as spectacular as once believed, and is therefore much harder to observe. There are not nearly as many such luminous objects in the two-million light-years separating Earth's galaxy, the Milky Way, from the Andromeda Nebula, the nearest ripeness galaxy", says Rogier Windhorst of Arizona State University. If, alternatively, quasars are long-lived, it implies they ripeness more rare. By viewing galactic structures in infrared light, the NICMOS should be able to provide important new details about the host galaxies of quasars. We've never seen so many of these object ... Read more »

However some quasars look unperturbed, so there may be other, more subtle mechanisms for feeding the black hole. The objects typically measure only 2,000 light-years across. Astronomers also need to address a "chicken and egg" problem about the birth of quasars. However, astronomers have never directly seen galaxies form, because their formation may have happened a long time ago, or because galaxy formation is not as spectacular as once believed, and is therefore much harder to observe. There are not nearly as many such luminous objects in the two-million light-years separating Earth's galaxy, the Milky Way, from the Andromeda Nebula, the nearest ripeness galaxy", says Rogier Windhorst of Arizona State University. If, alternatively, quasars are long-lived, it implies they ripeness more rare. By viewing galactic structures in infrared light, the NICMOS should be able to provide important new details about the host galaxies of quasars. We've never seen so many of these object ... Read more »