Primordial black hole
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In cosmology, primordial black holes are hypothetical black holes that formed soon after the Big Bang. In the inflationary era and early radiation-dominated universe, extremely dense pockets of subato
Researchers using the James Webb Space Telescope in November 2025 confirmed an actively growing supermassive black hole within a "little red dot" galaxy named CANUCS-LRD-z8.6, just 570 million years after the Big Bang.
Black hole Messier 87 crop max res
Dark matter
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In astronomy and cosmology, dark matter is an invisible and hypothetical form of matter that does not interact with electromagnetic radiation, including light. Dark matter is implied by gravitational
Primordial black hole
…time as observed by the James Webb Space Telescope (JWST). PBHs have long been considered possibly important if not nearly exclusive components of dark matter, the latter perspective having been strengthened by both LIGO/Virgo interferometer gravitational wave and JWST observations. Early constraints on PBHs…
Hubble close-up on the Coma Cluster
Gravitational lensing bends light around a massive object from a distant source. The orange arrows show the apparent position of the background source. The white arrows show the path of the light from the true position of the source.
The Bullet Cluster