동아사이언스

우주의 형성

과학동아 1990년 06호

that surround huge "voids" within which there are practically no galaxies. It is as though the universe were a vast sponge made up of galactic structures surrounding holes.How could the universe have come to look this way? What would act to force the originally evenly spread-out matter into such an oddly uneven shape?There are exactly four types of forces in the universe that control the ways ...