Our wandflower , the Milky Way , is surround by modest galaxies . The accurate number is unmanageable to estimate – the galaxies are small and dim , and they stop up blending with the background knowledge objects and foreground stars . Theory intimate that there should be a portion more dwarf galaxy around the milklike Way than we see . But now , uranologist think we might have more little galaxies close to the Milky Way than should be possible .
These two apparently paired problems seem to be find at the same time , and they are connect with each other . They all depend on the Standard Model of Cosmology , which expect the world of drear thing and saturnine vitality as the major component of the Universe . According to model from the model , there should be over 200 dwarf galaxies around the Milky Way .
We are nowhere near finding that number . There are less than 70 known gnome galaxies within1.4 million light - yearsof the Milky Way , including campaigner . All the others might be just too vague , or in a hard place for us to well spot them .
The mannequin also gives an estimate for how many of these different galaxies should be within a sure distance . Within 650,000 light - eld , there should be 3.9 galaxies . This is what the team found in this yet - to - be - peer - review paper . But in the same newspaper , the squad announced two unexampled nominee satellite galaxies and confirmed the existence of three more candidates . Their names are Virgo I , Cetus III , Bootes IV , Sextans II , and Virgo III .
But even if we want to be extremely sceptical of these five likely Galax urceolata , there are four other galaxies whose existence has been affirm : Sextans , Leo IV , Leo V , and Pegasus III . There are also the gravid and Small Magellanic Clouds , midget galaxies visible to the naked eye in the Southern Hemisphere . A recent paper suggests that they arenot two galaxy but three . So or else of less than four galaxies within that distance , we might have 11 or 12 physical object .
So , is it too many galaxies or too few ? The researchers are not clean a encampment beyond saying that more observation are require to really understand these objects and their distance . Even the models are base on effrontery that might be too restrictive . Future surveys might actually bring forth a better understanding of these and yet - to - be - discovered galaxies .
The paper documenting this discovery is useable on the preprint repositoryArXiv .
[ h / t : Universe Today ]
