Over 100,000 of these are known to exist, all of which have high redshift, implying that they are billions of light years from Earth.
Over 100,000 of these are known to exist, all of which have high redshift, implying that they are billions of light years from Earth. That we can still see them implies that they are the brightest objects in the universe, and 3C 273 was the first one discovered. The leading theory is that they shine due to the accretion of material into black holes. For ten points, identify these quasi-stellar objects found at the center of distant galaxies.
Over 100,000 of these are known to exist, all of which have high redshift, implying that they are billions of light years from Earth.
{quasars}