But it doesn't seem likely that wormholes exist. "Reading Kip Thorne's popular book about wormholes is what first got me excited about physics as a child," Massey said. But it gained some fresh ground in the 1980s when physicist Kip Thorne - one of the world's leading experts on the astrophysical implications of Einstein's general theory of relativity - raised a discussion about whether objects could physically travel through them. Such an idea has been floating around for some time: Einstein teamed up with Nathan Rosen to theorise bridges that connect two different points in space-time in 1935. They may even be, as some have suggested, a path to another universe. Over the years scientists have looked into the possibility that black holes could be wormholes to other galaxies. (Image credit: Karl Tate, contributor) (opens in new tab) Black holes are strange regions where gravity is strong enough to bend light, warp space and distort time.
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