Complex sentence: In April 2010, radio astronomers working at the Jodrell Bank Observatory of the University of Manchester in the UK reported an object in M82 that had started sending out radio waves, and whose emission did not look like anything seen anywhere in the universe before.
Split into simpler sentences: In April 2010, radio astronomers working at the Jodrell Bank Observatory of the University of Manchester in the UK reported an unknown object in M82. The object started sending out radio waves, and the emission did not look like anything seen anywhere in the universe before.