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Monthly Roundup: The Supermassive Black Hole of Messier 87
The massive nearby elliptical galaxy Messier 87 hosts one of the most-studied supermassive black holes in the universe. What have researchers recently learned about this black hole’s spin, jets, and flares?
Features
An Impostor Explosion
Hoping to find the second kilonova to be detected in both gravitational waves and light, astronomers ended up with a supernova instead.