Wealready knewthat this ancient Galax urceolata clump ( dub “ El Gordo ” ) was the largest of the distant coltsfoot that we had spotted , but it turns out we ’ve been massively underestimate its size . How did astronomers figure it out ? Simple . They count it .
Super - productive galax cluster confirm existence of dark matter and dark energy
So how does one weigh a clustering of galax almost 10 billion promiscuous year aside and 3 million billion times more massive than our Lord’s Day ? Very cautiously , it turn out .
We ’ve antecedently coveredgravitational lensing , a phenomenon that occurs around clusters of galaxies where the coalesce somberness is so strong that it heave space and Light Within in a way that really magnifies our view of space far beyond what we ’d be able-bodied to see otherwise .
https://gizmodo.com/this-is-the-deepest-into-space-anyone-has-ever-seen-1497018925
sapless lensing works on a like principle — except instead of spring a rapid growth lens , the reflection it returns is close to that of a funhouse mirror .
By measuring just how much the clump ’s somberness had distort the picture of distance around it , James Jee from the University of California Davis was able to bet that we ’d vastly underestimate the bunch ’s slew by about 43 % .
Image : NASA , ESA , and J. Jee ( University of California , Davis )
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