Dwarf galaxy that reveals the history of the universe
Tuesday, March 24, 2015 - 06:30
in Astronomy & Space
The first galaxies were formed some 13.3 billion years ago, mainly composed of hydrogen and helium, the primary elements that emerged from the Big Bang. Their study to date has been technically very challenging due to their great distance from us, but the observation of analogous galaxies in our vicinity has turned out to be an excellent shortcut.