James Webb Space telescope uncovers hidden galaxy missed by NASA's Hubble

What went unticed by Hubble telescope has been spotted by world’s most powerful observatory. James Webb Telescope has uncovered a new galaxy next to a discovered one that belongs to earliest period of universe. NASA revealed that Webb used gravitational lensing phemen to observe galaxy named MACS0647-JD which formed in first 400 million years of big bang. 

Webb outshines Hubble

Dan Coe, who discovered MACS0647-JD ten years ago using Hubble said that it was a pale red dot as galaxy is one of most distant, about 97% of way back to universe's beginning. "w we look with Webb, and we’re able to resolve two objects! We’re actively discussing wher se are two galaxies or two clumps of stars within a galaxy. We don’t kw, but se are questions that Webb is designed to help us answer", astromer said in an official statement.

(MACS0647-JD appears in three locations due to gravitational lensing; Im: NASA, ESA, CSA, STScI)

new galaxy next to MACS0647-JD came to light due to phemen of gravitational lensing caused by galaxy cluster named MACS0647. This cluster has such strong gravity, that it is warping around it causing galactic system to appear at three different locations. Under this phemen, a massive object ( cluster in this case) acts as a natural lens and magnifies object behind it ( galaxy system). Coe explained that system has been lensed into three ims-- JD1, JD2, and JD3 above-- and y’re magnified by factors of eight, five, and two, respectively.

"You can also see that colors between two objects are so different. One’s bluer; or one is redder. blue gas and red gas have different characteristics", astromer Tiger Yu-Yang Hsiao said. " blue one actually has very young star formation and almost dust, but small, red object has more dust inside, and is older. And ir stellar masses are also probably different". 

Moreover, NASA also shared pictures comparing views from Hubble and Webb telescope, however, latter completely outshines former. Moving forward, scientists would aim to determine if two galaxies are merging or is it just two clumps of stars within a galaxy.