Monash researchers have identified a new concept – ‘orphan memory’ – which changes the current thinking around gravitational waves. Einstein’s theory of general relativity predicts that cataclysmic cosmic explosions stretch the fabric of spacetime. The stretching of spacetime is called ‘gravitational waves.’ After such an event, spacetime does not return to its original state. It stays stretched out. This effect is called ‘memory.’ The term ‘orphan’ alludes to the fact that the parent wave is not directly detectable.
“These waves could open the way for studying physics currently...
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