Scientists test whether a JWST 'little red dot' could host a primordial black hole

By the Everything Space news desk · 05 Nov 2026 · written from the sources below

Image: Phys.org

Johns Hopkins researchers model whether QSO1, an early-universe object seen by JWST, could be powered by a black hole formed before the first stars.

Researchers at Johns Hopkins University have examined whether a compact, reddish object spotted by the James Webb Space Telescope, named QSO1, could harbor a primordial black hole—a hypothetical type of black hole that would have formed before stars, galaxies, or heavy elements existed.

Unlike ordinary black holes, which form from the collapse of dying stars, primordial black holes are thought to arise from the extreme physical conditions of the universe's earliest moments, during a period of rapid cosmic expansion. No direct evidence for such objects has ever been found, so scientists are searching for indirect signs that could distinguish them from conventional black holes.

QSO1 stood out as a candidate because of its age and makeup: it existed only a few hundred million years after the Big Bang and is composed almost entirely of hydrogen and helium, with little trace of the heavier elements produced later by stars. This composition suggested it could have formed under unusual, very early conditions.

The team modeled several ways a primordial black hole might have grown to match QSO1's size and surrounding disk of gas and energy, while staying within limits set by broader cosmological observations on how many such black holes could exist and how densely they could cluster. Their most plausible scenario involved a smaller primordial black hole steadily pulling in surrounding material until it reached the scale needed to resemble QSO1.

The researchers describe this as evidence that the primordial black hole explanation remains viable, though not yet proven, and plan to extend the analysis to the broader catalog of roughly 100 known 'little red dots' to see how many could plausibly fit this origin story.

Confirming the existence of primordial black holes would require finding one either too small to have formed from a stellar collapse or old enough to predate the first stars altogether—evidence that would reshape understanding of the universe's earliest physics.

Written in Everything Space’s own words by our news-desk model from the sources above, and checked against them in code: every number in this report appears in its sources, and no sentence is copied from them.