Whats is significance of 'Saraswati' supercluster discovery?
The new-found 'Saraswati' supercluster is a cluster of 43 galaxy clusters, each holding thousands of galaxies. Studying the four-billion-year-old supercluster allows astronomers to look back in time when Universe was much younger, as light from these galaxies takes time to reach Earth. It would also explain how dark matter clumps galaxies together and how dark energy causes them to expand.