Task: Text Simplification
Input (English): september 13 - astronomers from the european southern observatory -lrb- eso -rrb- announce images that appear to show a planet orbiting a brown dwarf about 230 light years away.
Output (English): on 13th september , astronomers from the euraopean southern observatory -lrb- eso -rrb- made public the images that appear to show a planet moving around a brown dwarf approximately 230 light years away.