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
For the first time archaeologists have found astronomical writings dating from the height of the Maya civilisation in the 9th century