Planets beyond Neptune tiny, tiny, field of view, that would suggest that there are something like 200,000 Earth-sized planets in the outer Solar System ... Even better, I just realized that this many Earth-sized planets existing would destabilize the entire Solar System and we would all die." As of 2016 the following observations severely constrain the mass and distance of any possible additional Solar System planet: Planets beyond Neptune Following the discovery of the planet Neptune in 1846, there was considerable speculation that another planet might exist beyond its orbit. The search began in the mid-19th century and continued at the start of
Gustav Holst opera, "At the Boar's Head", followed; neither had the immediate popular appeal of "A Moorside Suite" for brass band of 1928. In 1927 Holst was commissioned by the New York Symphony Orchestra to write a symphony. Instead, he wrote an orchestral piece "Egdon Heath", inspired by Thomas Hardy's Wessex. It was first performed in February 1928, a month after Hardy's death, at a memorial concert. By this time the public's brief enthusiasm for everything Holstian was waning, and the piece was not well received in New York. Olin Downes in "The New York Times" opined that "the new score seemed