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Time travel and how to achieve it

点击量:   时间:2017-11-22 08:01:12

By Zeeya Merali HIRO NAKAMURA in the TV show Heroes has the enviable knack of travelling through time and space. For the rest of us, it’s not so easy – unless we can find a “naked” black hole. Such bodies could act not only as a “cosmic time machine”, but might be responsible for the gamma-ray bursts often seen from Earth, which could be signs of time travellers coming back from the future. This cosmic time-travel scheme using naked black holes was dreamed up in the 1970s by Fernando de Felice at the University of Padua in Italy. His idea,