Final answer:
Quasars emit strong radio emissions, exhibit redshifts in their spectra, and produce tremendous amounts of energy from a compact region. They do not exist within the solar system, but in the centers of distant galaxies.
Step-by-step explanation:
The question asks which statement is not true about quasars. Understanding quasars requires a look at their properties and behaviors in space. Quasars were initially mistaken for stars because they looked similar in early telescopic images, but they exhibited strong radio emission, which was uncommon for stars. These quasi-stellar objects were later found to undergo redshifts in their spectra, signifying that they are moving away from us at high speeds. Astronomers realized that quasars have redshifts much larger than those of stars, with some quasar spectra showing redshifts that correspond to velocities up to 96% the speed of light. Quasars are located at the centers of galaxies, and they emit tremendous amounts of energy, appearing very bright in infrared and X-ray bands, but not all of them can be seen across the entire electromagnetic spectrum. They are compact, with energy output in a volume sometimes no larger than our solar system. Additionally, some quasars have been observed to shoot out straight jets at velocities close to the speed of light. Thus, quasars do not exist within the solar system, but their presence and activity are significant factors in their host galaxies, and they play a crucial role in the study of cosmic phenomena.