... A Baby Galaxy . ... 24.03.1998 . ... Keck 10-m Telescope Explanation: What's the farthest galaxy known? The answer keeps changing as astronomers compete to find new galaxies which top the list. ... Detected light left this galaxy billions of years ago , well before the Earth formed, when the universe was younger than 1/10th of its present age. ... Young galaxies are of much interest to astronomers because many unanswered questions exist on when and how galaxies formed in the early universe . ...