Astronomers have construct a model of what the very first galaxies in the universe may have looked like and what they look like today . In doing so , the astronomer let on that some of the Milky Way ’s neighbors match the present - day verbal description of the galaxies .
As reported in theAstrophysical Journal , astronomers from Durham University and the Harvard - Smithsonian Center for Astrophysics suggest that dwarf galaxies such as Segue-1 , Bootes I , Tucana II , and Ursa Major I are some of the first galaxies ever formed . These tiny satellites of the Milky Way already had stars in blank space over 13 billion years ago .
“ Finding some of the very first galaxies that formed in our universe orbiting in the Milky Way ’s own backyard is the galactic equivalent of finding the remains of the first humans that inhabited the Earth . It is staggeringly exciting , ” Professor Carlos Frenk , manager of Durham University ’s Institute for Computational Cosmology , said in astatement .
The team ’s theoretical account aims to predict what go down in the first 100 million years of the Big Bang , an epoch known as the Cosmic Dark Ages . The first atom formed when the population was roughly 380,000 years old . The first elements then start to slowly bunch up up in the regions of distance that have a bit more gravity , where disconsolate matter was a little denser .
In those “ halo ” , galaxies spring over C of millions of year . The team , in particular , was interested in how the satellites of the Milky Way come to form . The model implied that some faint , small planet form very early in the history of the universe of discourse , while others came afterward . Observations reassert their result .
“ A nice aspect of this work is that it highlights the complementarity between the anticipation of a theoretic model and real data , ” Dr Sownak Bose , from the Harvard - Smithsonian Center for Astrophysics , contribute . “ A decade ago , the wispy galaxy in the vicinity of the Milky Way would have lead under the radar . With the increasing sensitivity of present and next galaxy censuses , a whole new treasure trove of the tiniest galaxies has arrive into the light , allowing us to examine theoretical models in new regimes . ”
The Cosmic Dark Ages are still full of mysteries . We are yet to observe the first population of stars , for example . Work like this highlights the complexity in finding reply about the Universe ’s spring chicken .
