BBCNEWS BBC World News May 28, 2021 00:23:00
The invisible substance, which is thought to make up about 80% of all material in the universe, is more spread out than first predicted. that could challenge a long—held science tenet — einstein's theory of general relativity. our science correspondent, pallab ghosh, reports. look up at the skies, and you see stars. but this telescope, in the deserts of chile, is able to see the universe as it really is, filled with a mysterious substance called dark matter. it can't be seen, but this instrument can detect dark matter by the way it distorts starlight. this is a map of matter in the univers...