Complex sentence: Various news reports, including those provided by the Associated Press, stated that it is the brightest object seen so far in the universe, however this is erroneous as other quasars are known to be at least 100 times more luminous.
Split into simpler sentences: Various news reports, including those provided by the Associated Press, stated that it is the brightest object seen so far in the universe. However, this is erroneous as other quasars are known to be at least 100 times more luminous.