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Back to list of articles From the September 2024 issue A problem called the final parsec problem details the theoretical difficulty of bringing supermassive black holes close enough for gravitational waves to rob them of momentum and cause them to eventually merge. A screenshot from a simulation shows the merger of two supermassive black holes.
The Vera C. Rubin Observatory at dawn. Credit: Vera C. Rubin Observatory/NOIRLab/AURA/NSF/J. Sources When the Vera C. Rubin Observatory comes online, perhaps at full capacity in 2025, this powerful and unique survey telescope, at high altitude in Chile, will study the skies in a new and unprecedented way. Originally called the Large Synoptic Survey Telescope,
