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Astronomy and space

Astronomy and space

Home » Astronomy and space » X-rays reveal a cosmic filament

X-rays reveal a cosmic filament

30 Jun 2025
X-ray image of a cosmic filament
Cosmic filament The newly discovered filament connecting four galaxy clusters, which are visible as bright spots at the bottom and top of the filament. A mottled band of purple stretches between these bright dots, standing out brightly against the black surrounding sky. This is the filament of X-ray-emitting hot gas that had not been seen before, and contains a chunk of “missing” matter. (Courtesy: ESA/XMM-Newton and ISAS/JAXA)
New observations support the idea that hot, diffuse threads of gas called cosmic filaments connect c

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Sam Jarman is a science writer based in the UK
Back to Astronomy and space Astronomy and space
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