Unknown to Adams, Le Verrier had reached the same mathematical conclusions as him about the existence of a new planet (Neptune). Adams had already left a paper with Airy, the Astronomer Royal, asking for observations to be made to test for the predicted planet’s existence, but Airy fatally delayed his response, and when a row erupted over the truth of the discovery of Neptune, cold-shouldered Adams. Le Verrier became a good friend to Adams, despite getting all of the credit. Stokes was a professional collaborator and frequent correspondent; Babbage also corresponded with him.