Gas clouds gamma ray heartbeat puzzles astronomers
https://www.upi.com/Science_News/2020/08/17/Gas-clouds-gamma-ray-heartbeat-puzzles-astronomers/1111597678826/?fbclid=IwAR0y238zbOvCFeHGhSSg_va_qFZgB1KUSEpTMkOVB6ORNKeXpSJaaMwPG-c Source Cited: www.upi.com Sign in to see full entry.
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