ThePerseus clusteris enormous . It has a mass equivalent to 600 trillion Suns , and it look like it has not stopped develop . Modern evidence suggests that it is undergoing a coming together cognitive process with another cluster , and a bridge of dour matter has been the crucial clue to encounter this linked , but previously missed , companion .

Dark matteris a hypothetical and unseeable substance that permeates the whole world . It is invisible because it does not interact with light ( or maybe it does sovery weakly ) , so we can only infer its existence and front through its gravitative interaction .

Using the Subaru / Hyper Suprime - Cam   and archival data from the Sloan Digital Sky Survey , researchers have map the subtle change that the mien of this invisible matter would have . It is know as infirm gravitational lensing , and while it is a minute result , it can be seen .

" This is the missing part we ’ve been looking for , " Dr James Jee , corresponding author of the bailiwick , tell in astatement . " All the odd conformation and swirling gas keep in the Perseus cluster now make sense within the context of a major merger . "

There is some grounds that there has been a major fundamental interaction in this cluster . The fact that the hot throttle is not symmetrical and a rum dispersion of galax were hints , but there was no certainty that a major hit was happen . However , the weak lensing provided the necessary grounds to work out the bearing of a minuscule cluster situate 1.4 million light - age west of the main Perseus cluster , with a bridge deck of dark thing connecting the two . The fellow has amassof 200 trillion Suns .

" It necessitate braveness to gainsay the prevailing consensus , but the simulation results from our collaborator and recent watching from the Euclid and XRISM space telescopes strongly affirm our findings , " added Dr Hyeong Han Kim , the survey ’s first author .

" This breakthrough was made possible by merge mysterious imaging datum from the Subaru Telescope with advanced gravitational lensing techniques we developed — demonstrating the power of lensing to unveil the hidden dynamics of the Universe ’s most monumental structures , " said Jee .

The Perseus cluster is also well known for host a massive fundamental galaxy , whose rotate black jam is responsible for for producingthe lowest notein the universe .

The work is published in the journalNature Astronomy .