- Cosmic signal rattles Earth after 7 billion years https://www.bbc.co.uk/news/science-environment-53993937 5 comments science
- Scientists have detected the gravitational shockwave that spread out from the biggest merger yet observed between two black holes. The signal from this event travelled for some 7 billion years to reach Earth. The colliding black holes produced a single entity with a mass 142 times that of our Sun. https://www.bbc.com/news/science-environment-53993937 3 comments worldnews
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