More than 60 years after astronomers first detected its X-ray glow, Cygnus X-1 — the first black hole ever confirmed — is still revealing secrets. Researchers have now measured something that long ...
More than 60 years after it was first spotted, Cygnus X-1 — the first confirmed black hole — is still full of surprises. Researchers have finally measured the energy output of this behemoth's "dancing ...
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