What makes constellations?

Constellations are named after a Greek or Roman God. They were made to help sailors find their way. Now they are used to help more people find their way. In this world such help is very useful.

Saturday, September 13, 2025

Black Hole Merger

"On Sept. 14, 2015, physicists attained the long-sought goal of detecting gravitational waves, the shockwaves spewed out by such cataclysmic events as the violent merger of two black holes."https://www.npr.org/2025/09/11/nx-s1-5537131/ligo-10-years-black-holes-hawking-theory-confirmed

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