Monday, April 29, 2019

Astronomers discover 2,000-year-old remnant of a nova

Researchers have discovered the remains of a nova in a galactic globular cluster, located near the center of Messier 22. The finding, using modern instruments, confirms one of the oldest observations of an event outside the solar system.

from Latest Science News -- ScienceDaily http://bit.ly/2GRGRx2
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Study finds untreated sleep apnea doubles Parkinson’s risk

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