Gravitational waves helping to expose black holes, dark matter and theoretical particles

Gravitational waves helping to expose black holes, dark matter and theoretical particles
Gravitational waves – the invisible ripples in the fabric of space predicted by Albert Einstein – are opening up a new era of astronomy that is allowing scientists to see parts of the universe once thought to be invisible, such as black holes, dark matter and theoretical subatomic particles called axions.
phys.org
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