Space
Strange gamma-ray signal could be most direct evidence of dark matter yet
Researchers spotted an unusual gamma-ray signal in three galaxy clusters, which may be a telltale sign of dark matter – or some even more exotic phenomenon
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Researchers spotted an unusual gamma-ray signal in three galaxy clusters, which may be a telltale sign of dark matter – or some even more exotic phenomenon
Nearly 40 years after Stephen Hawking's A Brief History of Time, Sarah Alam Malik's epic exploration of the cosmos reflects a changed landscape around science in the 21st century, finds Alison Flood