Gravitational waves are cosmic ripples in the fabric of space and time that emanate from catastrophic events in space, like collisions of black holes and neutron stars — the collapsed cores of massive supergiant stars. Extremely sensitive gravitational-wave detectors on Earth, like the Advanced 
Dr. Lilli Sun is on the hunt for boson clouds – a key contender for dark matter. Credit: Tracey Nearmy/ANU
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