The final view, from the NASA/ESA Hubble Space Telescope, shows the bright stars of the cluster, as well as a collection of faint stars; these faint stars are actually part of a background galaxy, which was discovered accidentally by astronomers studying the cluster itself.
While searching the globular cluster NGC 6752, an global team of scientists discovered a compact collection of stars millions of light years away.
The newly found galaxy is nicknamed Bedin 1 by the astronomers, is an average sized, elongated galaxy. It measures only around 3000 light-years at its greatest extent - a fraction of the size of the Milky Way. In a celestial game of "Where's Waldo?", Hubble's sharp vision uncovered a never-before-seen dwarf galaxy located far behind the cluster's crowded stellar population. Incredible footage from NASA shows the camera zooming in on the "tiny" galaxy, dubbed "Bedin 1", surrounded by thousands of dazzling stars.
The team published their discovery January 31, in the Monthly Notices of the Royal Astronomical Society: Letters.
Dwarf spheroidal galaxies are not uncommon: There are at least 36 in our Local Group of galaxies. The aim of their observations was to use these stars to measure the age of the globular cluster, but in the process they made an unexpected discovery. Not only is it one of just a few dwarf spheroidals that have a well established distance but it is also extremely isolated.
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The astronomers who discovered this new galaxy were originally doing a survey of a cluster known as NGC 6752.
So if Bedin 1 is gravitationally connected to the distant NGC 6744, the larger galaxy appears to have left its little sibling alone.
Astronomers have discovered a galaxy thought to be around 13 billion years old - almost as old as the universe itself.
Scientists using the Hubble telescope have discovered a new dwarf galaxy. The galaxy's isolation means it rarely interacted with other galaxies, making it the equivalent of an early universe "living fossil", the space agency explains.
The Hubble Space Telescope is a project of worldwide cooperation between NASA and ESA (European Space Agency).