Space & Astronomy Strong evidence
Euclid found 31 exceptionally early quasars—including two new record holders
The objects were already blazing when the universe was about 670 million years old, sharpening the puzzle of early black-hole growth.
Comprehensive research hub
Black Hole Research
From quiet stellar-mass companions to the earliest quasars, this hub separates direct measurements from model-dependent mass and growth estimates.
2studies analyzed
0human studies
0randomized trials
0systematic reviews
0animal studies
What this hub covers
- Stellar-mass black holes
- Supermassive black holes
- Accretion physics
- Gravitational-wave populations
Questions we ask
- Was the object observed directly or inferred?
- Which assumptions drive the mass estimate?
- Could another compact object explain the signal?
Latest and foundational evidence
Research connected to this topic
Space & Astronomy Preliminary evidence
JWST observations point to a black hole wrapped in dense gas at cosmic dawn
An unusual source 660 million years after the Big Bang fits a proposed rapid-growth configuration, but the interpretation is model-based.