But we're not quite ready to trash general relativity.
The Event Horizon Telescope peered into the Messier 87 galaxy.
Gravitational wave detection is going through an even tighter squeeze.
Observatories all over the world caught a new kind of collision.
Virgo will help LIGO locate colossal cosmic collisions.
LIGO experiment reports a second successful discovery
A scientist tells how LIGO changed his life
They were produced by two merging black holes
If we detect them, it could mean a lot about the universe
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