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Astronomers find Universe's missing matter
BBC Sky at Night Magazine
|September 2025
Cosmic radio signals reveal the shadow of material lost in intergalactic space
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About 16 per cent of all the Universe's matter is 'ordinary', including everything from atomic nuclei to human beings. Unlike its mysterious counterpart, dark matter, it also emits light and interacts with other matter, meaning that it can - in principle - be detected. Despite this, a significant fraction of ordinary matter has gone unaccounted for, lost in the vast spaces between galaxies. Astronomers have now found it.
Denne historien er fra September 2025-utgaven av BBC Sky at Night Magazine.
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