SYDNEY (Reuters) - Scientists say they have discovered a black hole so big that it challenges the theory about how they grow.
Scientists said this black hole was formed about 900 million years after the Big Bang.
But with measurements indicating it is 12 billion times the size of the Sun, the black hole challenges a widely accepted hypothesis of growth rates.
"Based on previous research, this is the largest black hole found for that period of time," Dr Fuyan Bian, Research School of Astronomy and Astrophysics, Australian National University (ANU), told Reuters on Wednesday.
"Current theory is for a limit to how fast a black hole can grow, but this black hole is too large for that theory."