Space
Space-time ripples record black hole crashes
Gravitational waves contain details of merging black holes, and could tell us whether the earliest black holes were heavy enough to form the first galaxies
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Gravitational waves contain details of merging black holes, and could tell us whether the earliest black holes were heavy enough to form the first galaxies
There's trouble at the start of time: the theory of cosmic inflation has got way out of control. Can quantum theory and holograms tame it?