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The complex analysis used nearly 6 million galaxies and quasars and lets researchers see up to 11 billion years into the past.

MIT astronomers have observed the elusive starlight surrounding some of the earliest quasars in the universe.

At a certain point, light from typical galaxies is too faint, so researchers turn to quasars, extremely distant, bright galactic cores with black holes at their centers.

Called quasars, the gas-gobbling black holes are, ironically, some of the universe's brightest objects.

These SMBHs are called quasars and are among the brightest objects in the Universe.