How uranus helped neptunus

Yes, uranus helped astronomers discover the planet neptune! Just like trains, planeta also follow a time table as they move across the sky. Astronomers worled out a timetable that uranus was supposed to follow but it was unpredictable-sometimes it was late for a ‘station’ in the sky. It was as if uranus was hitting a bump on its path around the sun. Astronomers suggested that this bump could be another planet pulling at uranus with its force of gravity. Because they knew the ‘bus stop’ at which uranus was late, they could work out where the other planet should be.