Time travel is theoretically possible, new calculations show. But that doesn’t mean you could change the past. – Business Insider Australia

• Time travel is possible based on the laws of physics, according to new calculations from researchers at the University of Queensland.
• But time-travellers wouldn’t be able to alter the past in a measurable way, they say – the future would stay the same.
• Visit Business Insider’s homepage for more stories.

Imagine you could hop into a time machine, press a button, and journey back to 2019, before the new coronavirus made the leap from animals to humans.
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