Quasars are thought to be the most distant objects
yet discovered by mankind. The name quasar is short for the term:
‘quasi stellar radio source.’ The reason why this
celestial body has this full name is because the method at first
used to discover these objects involved a relationship between
radio-sources and optical-sources. Astronomers have discovered
that Quasars are enormously red shifted. What this means is that
as the universe is expanding, the light waves from a Quasar are
being stretched. The more the red shift, the farther they are
away. Hence, the farther they are away, the longer it takes for
its light to reach us. So Quasars basically give scientists a
view of the early, primordial universe. Quasars produce enormous
amounts of energy. These values can be as much as 100 galaxies
combined. Quasars also can be as bright as a trillion of our suns.
In other words, in one second, a Quasar produces enough power
to satisfy the electrical
needs of earth for the next billion years. The reason for this
amazing power and illumination is because in the center of a Quasar
there may be a super-massive black hole with many stars surrounding
it. Quasars produce light from all corners of the light spectrum:
gamma rays to infrared rays and on. Quasars are amazing objects
that provide us with a glimpse of the past and may perhaps reveal
to us the future.