Planet the Sun: Jupiter is the largest, at 318 Earth masses, whereas Mercury is the smallest, at 0.055 Earth masses. The planets of the Solar System can be divided into categories based on their composition: An exoplanet (extrasolar planet) is a planet outside the Solar System. In early 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the pulsar PSR 1257+12. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. These pulsar planets are believed to have formed from the unusual remnants of the supernova that produced the
Gustav Holst Municipal Orchestra premiered Holst's symphony "The Cotswolds" (Op. 8), the slow movement of which is a lament for William Morris who had died in October 1896, three years before Holst began work on the piece. In 1903 Adolph von Holst died, leaving a small legacy. Holst and his wife decided, as Imogen later put it, that "as they were always hard up the only thing to do was to spend it all at once on a holiday in Germany". While in Germany, Holst reappraised his professional life, and in 1903 he decided to abandon orchestral playing to concentrate on composition.