Scientists Find Mysterious 'Heartbeat' in Galactic Gas Cloud

X-Ray Astronomy Archives - Page 8 of 10 - Universe Today

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Gamma-ray heartbeat at the heart of distance gas cloud powered by black hole is 'baffling

Mysterious 'heartbeat' detected from cosmic gas cloud

Scientists detect a 'gamma-ray heartbeat' linking two…

Galactus Is Coming!' Mysterious 'Heartbeat' Detected in Cosmic Cloud - IGN