Astronomers have identified what may be one of the clearest examples yet of a quasar caught mid-transition — emerging from a heavily dust-shrouded phase into an exposed one. Nicknamed «the Hatchling,» the red quasar sits at redshift 3.7, seen as it was when the universe was only 1.7 billion years old. The team, led by Zheng Ma (Steward Observatory, University of Arizona), posted the work to arXiv on July 25, 2026.
A long-standing question
One unresolved puzzle in early-universe physics is whether dust-shrouded red quasars and bright unobscured quasars are genuinely different objects, or the same object seen at different evolutionary stages. The leading idea is that gas funneling into a galaxy’s center feeds rapid black-hole growth while burying it in dust — until the black hole’s own outflows blow that gas away, clearing channels through which its light can finally escape.
Catching that clearing in the act has been the hard part. A red color and the broad spectral lines of an actively feeding black hole are not enough on their own; researchers need many kinds of data on the same object at once — visible light, infrared from warm dust, X-rays and radio confirming an active nucleus, and spectroscopy fine enough to separate gas near the black hole from gas farther out and from the outflowing winds.
A rare full-spectrum view
The Hatchling made this possible because it happens to lie in a patch of sky observed by an unusual number of facilities: JWST in the infrared, ALMA at millimeter wavelengths, Chandra in X-rays, Hubble in the optical and near-infrared, MUSE on the Very Large Telescope, and the Very Large Array in radio. Having near-simultaneous data across almost the entire spectrum for a single object is rare.
The combined analysis shows the central black hole is already visible, yet dense gas still blocks part of its glow — a nucleus breaking free of its shell, much like a hatchling emerging from an egg. The team also found an extended halo of disrupted gas reaching roughly 65,000 light-years from the core, the signature of feedback actively clearing the surrounding material.
The Hatchling captures a critical but poorly explored stage: the accreting black hole is visible, feedback is clearing the gas and dust, and the host galaxy is still assembling around an overmassive nucleus. To learn how common and how long-lived this phase is, the team calls for systematic searches for similar objects backed by high-resolution spectroscopy.
© 2026 Homer Dávila Gutiérrez, FRAS — SKYCR.ORG. All rights reserved. Publication: Zheng Ma et al., A quasar hatching from a buried red phase at z = 3.7, arXiv:2607.22966 (2026). DOI: 10.48550/arXiv.2607.22966
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 have identified "the Hatchling," a red quasar at redshift 3.7 caught transitioning from a dust-buried phase to an exposed one. Rare near-simultaneous data from JWST, ALMA, Chandra, Hubble, MUSE and the VLA show its central black hole already visible while feedback clears the surrounding gas — with a disrupted-gas halo reaching 65,000 light-years. A rare view of a quasar emerging in the early universe.){kind=link}