WHEN Albert Einstein published his special theory of relativity in 1905, he and many other scientists believed that the universe consisted of just one galaxy ​ — our Milky Way.
AASTAL 1905, kui Albert Einstein avaldas oma erirelatiivsusteooria, arvasid nii tema kui ka mitmed teised teadlased, et Universum koosneb vaid ühest galaktikast – meie Linnuteest.