According to cosmological simulations , there should be a lot more small galaxy in the universe than those we see . This mystery story , known as the dwarf beetleweed job , is difficult to explain , but an outside team of researchers suggest that of the essence cue might be hiding in ultraviolet Christ Within ( ultraviolet radiation ) .

In a paper , published in theMonthly Notices of the Royal Astronomical Society , researchers discourse a path to indirectly measure the UV background knowledge of the cosmos to explicate what happened to the dwarf Galax urceolata .

Young blistering stars and pitch-black maw can emit a huge amount of UV light and this luminance can warm up surrounding gas . If the petrol is too warm , it ca n’t distil and form new stars , and this might have stopped these small beetleweed from form   lots of stars . The galaxies out there are but too disconsolate for us to see .

“ monolithic stars and supermassive black holes produce huge amounts of ultraviolet radiation , and their combined radiation therapy builds up this ultraviolet background , ” lead author Dr Michele Fumagalli of Durham University say in astatement .   “ Our research means we now have the power to quantify and represent this ultraviolet illumination radiation which will help us to further rectify models of wandflower shaping . ”

Galax urceolata , especially young ones , are full of hydrogen petrol . The flatulency absorbs the ultraviolet radiation light and then re - emits it in visible igniter that can be detected from Earth . By measure this red light , investigator believe that they can gauge the entire UV background .

They examine it for Galax urceolata UGC 7321 , located 30 million light - year away . They were able to detect a fluorescent glow surrounding the galaxy and show a economic value for the UV background . This is reproducible with other estimation that   were achieved with dissimilar method acting .

“ Ultraviolet radiation sickness stir up the cosmic gas pedal to temperatures high than that of the airfoil of the Sun , " added co - generator Professor Tom Theuns , also from Durham .   “ Such hot gas will not chill to make headliner in small galaxies . This explains why there are so few modest galaxy in the existence , and also why our Milky Way has so few humble satellite Galax urceolata . ”

According to simulations , the Milky Way should be surround by about 500 small-scale galaxies , but only about 50 have been observed so far .